I wrote this prompt as a part of densiprompt's story exchange on Tumblr, but I know that many of you may not go on there so I decided to post it here as well. This is part one of a two-parter and I hope you guys enjoy it!

This was my prompt, as requested by Shannon: Deeks finds out he has a younger sister. Established Densi.

The sun's warmth quietly radiated through the bay window in the master bedroom, its brilliant early morning rays peeking through the thick drapes and casting a long shadow across the resting couple. In sleep, Kensi Deeks rolled over and shifted closer to her husband. Silently Marty Deeks ran a hand lazily through his wife's hair while his other arm enveloped her in a gentle hug.

He caressed her back as he tenderly kissed his way from her neck to her exposed ear. "Morning, Sunshine" he whispered before nibbling at the lobe.

An irritated grunt was her only response.

"Time to wake up, Sweetheart."

Kensi peeped open one eye to look at him, and Deeks chuckled as the frown became evident in her sleepy features.

"Five more minutes" she grumbled.

"Alright" Deeks sighed, "but if it's more than five I'm gonna have to drag you out of bed and pull you into the shower myself." He winked suggestively and made his way over to the bathroom as Kensi snuggled even deeper under the covers.

After two full years of marriage, it seemed as though nothing had changed. Kensi was still the temperamental, stubborn, always fascinating yet ironically predictable woman Deeks had known since the very first day they met. Deeks, on the other hand, continued to surprise Kensi every day. There was never a dull moment, never a time when they questioned whether they had done the right thing in making the ultimate commitment in their relationship. Despite one obstacle after the next, they were confident their marriage could endure anything that came their way.

Seven minutes later, just as Deeks was reaching for the shampoo, Kensi silently stepped into the shower to join him.

"You're late" he stated matter-of-factly, though his affectionate grin instantly gave him away.

Kensi smiled back as she rested her head on his chest, allowing the spray of warm water to cascade over her body. Deeks held her firmly against him, getting lost in the feel of her smooth skin sliding across his, ravishing in her quiet yet overwhelming presence.

"I love you" she whispered into his neck.

Deeks felt himself shiver, and was sure she could feel it as well. Her love never ceased to amaze him, even now; even after all they had been through together. Some nights he would wake up gasping and in a cold sweat, convinced that their vows had been nothing more than a repetition of the same glorious dream, a mere figment of his overactive imagination.

And then she would curl up next to him in bed, reassuring him with nothing more than a simple kiss to his tear-stained cheek, and he swore that God could never have given him a greater blessing.

But there was only one thing, Deeks knew, that could make their lives together even better.

They had begun trying only a few months after their honeymoon. Kensi was hesitant about it at first, just as Deeks had expected, but seeing the look on his face after the first time he asked was easily enough to convince her. There was nothing Deeks had wanted more than creating a family of his own, and Kensi was desperate to give it to him.

After twenty-two months, however, luck still hadn't been in their favor, and Deeks could tell Kensi was beginning to lose patience. But despite the anxiety and frustration, the confusion and uncertainties, he knew they could never lose hope. If they could never conceive, he would find a way to give them the family they both longed for.

"We'd better get going" Deeks said finally, once he and Kensi were both thoroughly clean. "Can't be late for work."

Thirty minutes later Kensi and Deeks arrived at the mission, prepared for another long day of paperwork and case reports. Kensi supposed they should have been happy about the fact that Los Angeles seemed to be the safest place in the world lately, but she was beginning to get restless after sitting in her desk all day, craving the thrill of chasing down suspects and the inevitable adrenaline rush that came along with it.

Sometime around noon, Eric suddenly appeared in her peripheral vision at the top of the stairs.

"We've got a case?" she asked with unveiled enthusiasm.

The three men's heads snapped up at the sound of her voice and turned to look toward Eric expectantly. Obviously they were feeling a little on edge, too.

"Um, actually no, we don't. Sorry" he added, tensing up under Sam's irritated glare. "Nell and I are just hungry but we're the only two in Ops right now so we can't leave. Would one of you guys mind grabbing us something to eat?"

Sam grunted and turned back to his laptop, while Kensi and Callen simply ignored Eric's request.

"Really? Me again?" Deeks rolled his eyes. "C'mon guys, I've made the lunch run the last three days in a row."

No response.

"You know what? Fine, I'll go. But you three…" He made a show of pointing to each of his coworkers in accusation. "You three are getting organic peanut butter and jelly sandwiches again. Remember how tasty those were last time?"

Kensi reluctantly looked up at him from her desk and sighed. "Alright, Deeks. I'll go with you. Besides, if I don't get out of here for a while I think I'll go crazy."

Deeks smiled in appreciation.

"Thank you very much."

"Can I help you?"

After twenty minutes of argument the couple finally ended up circling the car around and settling on the small Italian restaurant just at the end of the block. It was fairly run-down and had the overpowering stench of mothballs and cigarette smoke, along with decades-old, vomit-colored carpet, but at least there was one good thing going for it: it had the best pizza in town by far.

Deeks smiled at the young woman behind the hostess station. "Yeah, thanks. We're just gonna get a couple pizzas to go. We'll take two large pepperoni, with anchovies on half of the first one."

"Ugh, I don't think so" Kensi groaned. "There is no way I'm kissing you any time soon if you're eating that crap."

The hostess giggled as she left to send in their order.

Deeks turned to grin at Kensi cheekily, a response just beginning to form on his lips when the shot rang out just feet behind them, shock paralyzing him momentarily as panic broke out all around. He hardly registered the shriek of the young hostess and the cries of terror from the customers, their movements nothing more than a blur in his vision as his heart lurched into his throat.

Moments later the shooter was nowhere to be seen—he had made his escape out of the side exit in mere seconds, disappearing into the alleyway behind the restaurant and into the vast expanse of city freedom.

Deeks couldn't make sense out of anything—all he saw now were black spots in front of his eyes as his head spun at an alarming rate; his usual ability to react quickly in threatening situations completely vanished as his most horrific nightmare morphed instantly into terrifying reality.

Everything around him continued to blur until only one image came into sharp focus.

Dry sobs he didn't yet recognize as his own were now the only sounds in the restaurant as he fell to his knees on the ground.

All he saw was his partner, his wife, lying motionless in a crumpled heap on the floor in front of him.