Mallory sits quietly during the drive to the airport as she thinks about her brother and her relationship with Walter.

"Looks like it may rain." Walter observes.

"Good, Ireland can use every drop of it." Mallory replies almost mechanically.

"Is everything ok? You seem distracted. If I've done something…" Walter begins.

She lays her hand on his leg to silence him, "No Walter. I was just thinking about Sean and some things me mum said."

"Alright, then I will leave you to your thoughts." Walter concludes.

As Walter is unloading the luggage at the airport, a brief downpour occurs soaking him.

Ducking under the covered terminal with the last piece of their luggage, Walter hands the car keys off to the rental valet.

"Oh Walter, you're drenched. Let's get inside so ye can dry off." Mallory says.

Seeing Walter soaking wet with his shirt clinging tightly to his chest, Mallory found herself very aroused.

Completely oblivious to Mallory's current state, Walter says, "Well we better hurry if we're to catch our flight."

"Yeah, time always seems to be working against us." Mallory sighs.

About two hours later, Mallory sat longingly next to Walter waiting for their plane to take off. Walter had dried off, but that had not cooled Mallory's desire. As soon as the fasten seatbelt icon turned off, she leans into Walter and whispers, "How about some in-flight entertainment?"

"Sure, what would you like to watch?" Walter replies pulling out his tablet.

She puts a hand out to stop him, "That's not what I had in mind."

"Oh… OH! Here!?" Walter replies realizing what Mallory meant.

"No of course not. In the lavatory." Mallory giggles.

"Those are not designed… there's barely enough room for one…" Walter stutters.

"Think of it as an experiment in physics." She whispers while seductively climbing over him on her way to the back lavatory.

Walter glances back and their eyes meet as she enters the small bathroom. He hesitates a few moments before heading back. He barely got the lock fastened before Mallory aggressively undoes the buttons on his shirt.

"Are you sure you want our first time…" Walter begins.

"I can't wait another second." Mallory interrupts.

At that, Walter passionately kisses her before pulling off her shirt. In turn, she undoes his belt and lets his pants drop. He works down her skirt and panties while she runs her hands over his chest. With a quick tug, she drops his boxers moving her hands up his back and through his hair kissing all the while. Her skin tingles as he firmly pins her against the wall opposite the sink and begins to pleasure her.

"Oh yes Walter, yes." she moans softly.

Her delighted squeal as they climaxed echoed throughout the small space.

"Hmm, that was fun." Walter moans gently kissing her.

"Best in-flight entertainment ever," Mallory teases.

Cleaning up and redressing was like a spirited game of Twister, but they enjoyed every second of it. As Mallory tightens and fastens Walter's belt she leans in and whispers, "Uh oh, captain, we're experiencing some unexpected turbulence," in reference to his obvious arousal.

"Perhaps you have a solution?" Walter suggests.

"I may have an idea or two." She teases undoing his belt.

There is a knock on the door, "Is everything alright in there?" the flight attendant asks.

Mallory whispers to Walter, "It will be," then says aloud, "Yes everything is fine. Thank you."

A deeper masculine voice responds, "Good. Then you two need to come out of there right now."

Mallory whispers, "Sorry Captain. Looks like our flight has been grounded. I'll handle things outside and I trust you can take care of things in here."

Mallory slips out the door leaving Walter to finish solo.

"Hi there. Sorry about the little indiscretion, I just…" Mallory starts.

"Aren't ye one of Minister Sweeney's girl?" The air marshal asks.

Clearly embarrassed Mallory continues, "Yes I…"

"Look I understand, but I need ye two to take your seats and control your desires until ye depart this plane." the air marshal continues.

"Yes sir. I promise." Mallory says gratefully.

"Congratulations on ye nuptials." He adds having mistaken her for Elizabeth.

She nods politely and returns to her seat where Walter joins her a few minutes later.

Several hours later, Walter and Mallory had two hours left in their 10-hour flight, while Toby and Happy's flight had just taken off.

"Man, I can't believe our honeymoon is over." Happy laments.

"Technically, until this bird lands at LAX, we are still on Hawaiian soil." Toby suggests.

"What are you getting at, Doc?" Happy asks.

"Just that the honeymoon isn't over yet." Toby raises his eyebrows and tilts his head suggestively toward the lavatory.

"Uh, I hate to sound like Sly, but that thing is a haven for bacteria…" Happy starts.

"Not yet, the flight has just taken off." Toby interrupts.

"I don't know." Happy hesitates, "It's awful cramped in there."

"Lucky for me, you're so perfectly petite." Toby flatters.

"Ah, what the hell." Happy concedes.

In the small lavatory, they recklessly proceed to tear each other's clothing away without regard to wear it lands. Happy is perched against small sink ledge when Toby inadvertently backs into the flush button.

"Uh, Doc. I think you just flushed by panties." Happy states.

"Good, easier access that way." Toby replies while still necking Happy.

Happy shrugs it off and wraps her arms around Toby's shoulders, then Toby adds, "As Walter would say, it's more efficient."

"And we're done." Happy states pushing him away.

"What? You quoted Sly a while ago." Toby whines.

"Not in the middle of lovemaking, I didn't." Happy replies.

"You're right, I'm sorry. It'll never happen again." Toby whispers warmly into her ear in the way that drove her crazy.

"It better not." Happy concedes wrapping her legs around Toby.

As the passion and intensity is building, Happy thrusts herself onto Toby losing her delicate perch on the sink ledge, the unexpected weight shift throws Toby off balance and he falls backward into the door neither remembered to lock. The door swings open against their weight, and with a loud thud, Toby lands on his back with Happy on top of him in the aisle between the two lavatories. Several passengers turn around at the commotion and a chorus of gasps and giggles follow.

"Not good." Happy says.

"Really, you're going to critique me, NOW?" Toby jokes in an effort to ease the tension.

They spot a very unamused looking air marshal approaching and quickly scramble back into the bathroom.

"Quick, lock the door!" Happy demands.

"Got it. Although, I think he knows where we are and what we're doing." Toby jests.

"Doc, this is not funny…" Happy begins.

"Actually when you think about it, it's pretty hilarious. You don't see it now because you're embarrassed." Toby corrects.

"And you're not?" Happy asks intensely.

"Of course not. A plane full of people just saw me getting it on with the most beautiful sexy woman aboard. Why would I be embarrassed?" Toby sweet talks.

"Well, when you put it that way…" Happy finishes that thought when a kiss.

There is banging on the door. Toby answers in his best falsetto, "Sorry, we can't come to the door right now. We're not decent."

Happy giggles at his tomfoolery.

"You'd better hurry, you have three minutes before I unlock this door and drag you both out clothed or not." The marshal replies.

"Oh man, we'd better hurry." Happy states quietly.

"Guess it is a good thing that you have one less piece of clothing now." Toby teases reaching for his boxers.

Happy snatches them away and promptly flushes them. "Yeah, now so do you," she replies.

"That just turns me on more." Toby hints.

"Too bad, get dressed." Happy orders.

The two haphazardly finish dressing when they hear, "Three… Two… One."

They open the door just has the marshal is about to unlock it. Toby has his hands up in the surrender gesture with Happy behind him.

"Alright, you two out of there."

"Sir, I can explain. You see, we're on our way home from our honeymoon. Tomorrow we'll have to go back to work and I guess we just wanted one more memory before…" Toby explains stepping out.

"Look I get it. I do. But these days, what looks like a couple joining the mile high club could just as easily be a couple of terrorists assembling a bomb." The marshal explains while writing in a notebook.

"We understand. It will never happen again." Happy interjects.

"See that it doesn't." The marshal tears out the page and hands it to Toby.

After glancing at the paper, "A fine! $2,500 for having sex on a plane?" Toby exclaims.

"Actually, $2,000 for public nudity and $500 for disturbing the peace." The marshal clarifies.

"This is preposterous! If we were first class passengers, we'd just get a slap on the wrist." Toby responds.

"No sir, the law is the same for everyone. Actually, I'm letting you off easy seeing as you're newlyweds. If you want equal treatment, I could arrest and charge you." The marshal clarifies.

Smacking Toby in the back of the head, "No sir, we appreciate your leniency." Happy replies on their behalf. They return to their seats to field uncomfortable looks for the remainder of the flight.

Back at the garage, Sly, Cabe, Paige, and Ralph setup Toby and Happy's welcome home party. Toby updates them on everything he learned during his video chat with Sean and Louise.

"Do we know what time Walter will be back?" Paige asks.

"Yeah, I hacked the flight manifests. It arrives a little after 1:00 PM our time." Sly replies.

"Ok, and Toby and Happy get back at 4:00. Good, he should be able to help set up then." Paige replies.

"I don't know. Coming off a long flight and 7 hour time difference, I'm sure he'll want to rest a little before. Especially since he didn't have a couple of days to rest after the Arctic job." Cabe suggests.

"That's not our problem. We shouldn't have to do all the work because Walter over-commits himself." Paige responds.

"I don't think you're being fair. The Arctic satellite job fell into our laps at an opportune time, but none of us had much notice." Cabe explains.

"So, you're going to call Toby and Happy around 5:00 and tell them we have a case?" Sly changes the topic.

"Yeah, order them to meet us here at the garage." Cabe replies.

"They're not going to like that. What makes you think they'll come?" Sly asks.

Cabe smirks having just read a text on his phone from a friend that works air security for homeland, "Oh, they'll come alright. Let's just say they need the money."

"Makes sense. I'm sure they indulged a bit on their trip and have some new debt to work off." Paige confirms, oblivious to Cabe's knowledge of their plane debacle.

"Exactly." Cabe stifles a laugh.

"Well, you two should know about that, I guess." Sly replies, a little sad he never got a honeymoon with Megan.

Walter shuts his trunk, having just loaded the last of their luggage. Mallory hugs him from behind, running her hands all over his chest, "Hmm, my big strong man." She moans.

In a move that catches her completely off guard, he not only spins around to face her, but also manages to spin her round, pin her against the trunk, and kisses her passionately with one hand behind her head and the other making its way up her skirt. He is clearly as turned on as she is so she whispers, "Your place or mine?"

"My place is closer, but they're setting up for a party there so we'll have to make it to yours." Walter answers breathily.

Traffic wasn't any worse than usual, but it seems an eternity to Walter and Mallory as every light catches them. Finally at their destination they rush from the car. Walter hesitates briefly at the trunk.

"Leave it." Mallory urges.

They hurry in her condo and pick up where they left off some 11 hours ago. After a passionate round of lovemaking, they lay in bed wrapped in each other's arms.

"I suppose ye need to get home to shower and get ready for the party." Mallory inquires.

"Yeah, and I need to get your luggage out of my trunk." Walter replies.

Neither of them budge however and soon they drift off to sleep.

He awakes to her climbing on top of him. Her sexy black teddy revealing just enough to tease.

She straddles him, "Walter. Walter would you explain something to me?" She whispers.

"What's that?" He replies, already aroused.

"You said you loved me. After all of those long dark nights we spent together preparing for Toby and Happy's wedding, I felt we had something. I thought you felt it too, but then you show up with her. I don't understand, Walter."

Opening his eyes, he looks at her, "Paige? What are you doing here?"

"Walter, Walter ye need to wake up. We feel asleep." Mallory coaxes.

Jolting awake, he does a double take before responding, "Mallory, what did you say?" Walter asks.

"I said we feel asleep. You'd better get up, you're late to the party," Mallory giggles as she continues, "From the looks of it, ye might want to take a cold shower. That had better of been me ye were dreaming of."

"Now who else would I be dreaming of?" Walter responds suavely.

"That's what I like to hear; now ye best hurry." Mallory reminds.

"Surprise!" Paige, Sly, Cabe, and Ralph yell as Toby and Happy enter the garage.

"Oh man, so there is not a case." Happy states.

"You sound disappointed?" Paige asks.

"This is great guys; we could just use the extra money." Toby clarifies.

"So I heard." Cabe laughs.

"So Cabe, do you think you could use your homeland pull to help a brother out?" Toby inquires.

"Sorry. You do the crime, you pay the fine." Cabe responds.

"Wait, what crime?" Sly asks.

After a moment of uncomfortable silence, Happy blurts out, "We got fined for having sex on the plane."

Cabe and Sly burst out laughing, while Paige makes an effort to cover Ralph's ears even though it's too late.

"Mom, I do know what couples on honeymoons do." Ralph bemoans.

"Well, as long as you know to wait until your honeymoon." Paige replies.

"Is that what you did?" Ralph asks.

Paige is left speechless, unsure of how to respond to that.

"Where's Walter?" Toby asks to change the subject.

"We don't know. His flight was supposed to get in at 1:00, but we haven't seen him all afternoon." Sly responds.

"Flight? Where did he go?" Happy asks, grateful for the new topic of conversation.

The group then updates Toby and Happy on everything they now know about Mallory Sweeney and her family, having perused her online records. "The only thing we're still unclear on is how long they've been together and how they met." Sly finishes.

Walking into the garage, Walter knew better than to claim his flight was delayed. Sly would have already hacked the records and verified what time he exited the long term parking at LAX.

"Walter. Walter would you explain something to me?" Paige pounces as soon as he enters.

He freezes, her verbatim question from his dream catching him off guard.

"Walter, how does your flight get in 3 hours before Toby and Happy's but you arrive at the garage 30 minutes after them?" Paige continues.

"Oh, I feel asleep at Mallory's place. It was a long flight and I guess the time difference got to me." Walter responds.

"So Pal, how long have you been seeing this Mallory?" Toby asks.

"Oh, let's not talk about me. It's your party. How was your honeymoon?" Walter counters.

Toby and Happy proceed to tell the group about their scuba diving, hula-dancing lesson, and volcano tour of Hawaii, keeping the rest of their trip private. After they finish, there is a knock at the door. Paige goes to open it and finds Mallory on the other side. Walter immediately gets up.

"Hi, sorry to interrupt. You left your phone at my place and I thought you might need it." Mallory says to Walter.

"Thanks, Mal." Walter replies, kissing her.

Paige finds this scene very upsetting, "Well, I had better go check on dessert." She rushes out to the kitchen.

"Would you like to join us?" Toby offers, curious about their relationship.

"I'd better not. I have to work the early shift tomorrow. Thanks though. It was nice to see ye all again." Mallory answers.

While Walter says goodbye to Mallory, Cabe goes to check on Paige.

"You ok, kid?" Cabe asks.

Facing away from him to hide her tears she responds, "Of course, why wouldn't I be?"

"Maybe because you love Walter, but he's with someone else?" Cabe gently asks.

"What? I don't…" Paige stops her denial, "yeah, maybe. I knew how he felt for a long time, but I was afraid of… I don't know, maybe of losing our friendship, or maybe hurting him, or maybe of being hurt. I'm not sure, but I know I pushed him away and now I regret it. Maybe I should tell him how I feel? It would be better than not taking the chance at all, right? Always wondering…"

"I'm going to tell you want I told Walter when you were with Tim," Cabe interrupts, "This isn't about you. This is about him and his happiness. If it's meant to be then it'll happen, but you can't interfere in his relationship. What if Mallory is the one and you mess it up? What will that do to your friendship?"

Paige sighs deeply deflated, "Yeah, you're right. I really do need to get this dessert out the oven. I'll be out in a few."

Cabe leaves Paige to gather herself. A few minutes later, Walter gets up to walk off a Charley horse and enters the kitchen while Paige is bent over pulling the cobbler out the oven. Walter pauses to admire the view. Toby enters behind him and whispers, "I don't know if Mallory would appreciate your sightseeing."

"What, uh no… I was just thinking…" Walter begins

"Yeah, and I bet I know about what." Toby chokes.

Paige has now turned around dessert in hand.

"Do you need any help?" Walter asks.

"Yeah, grab the plates and forks." She responds tilting her head toward the counter.

During dessert, the gang laughs as they update Walter on Toby and Happy's plane escapade.

"You know Walt, the flight was your gift to us so it's only fitting that you pay this fine." Toby tries.

"Now Toby, everyone knows that in-flight entertainment isn't included in the flight cost." Walter replies straight faced.

There is a moment of stunned silence following Walter's joke before everyone bursts out laughing.

Catching his breath Toby cackles, "I don't know… what's more shocking… that you told a joke… or that it was actually funny."

The laughter dies down, but Walter still seems to be struggle to catch his breath and then he grabs his chest. Toby's immediately discerns that something serious is wrong and puts the symptoms together with his earlier Charley horse and the fact that he'd spent about 56 hours in a plane this week to conclude Walter had a DVT that had worked its way into the lungs. "Call 911 and tell them we have a suspected PE," he yells as he has Walter to lie back and take some Aspirin until the EMTs could arrive with a stronger anticoagulant.