"Commander, what's wrong?" the Doctor asked as soon as the door slid open. He helped the crewman get Chakotay on to one of the bio-beds.

"I have a Borg cube of a headache," Chakotay tried to jest, but the grimace ruined the effect. He lay back against bed and sighed as the pain eased a little.

As the Doctor used his medical tricorder to scan Chakotay, he remembered that he'd been headed to the bridge when the pain hit. He lifted his hand and tapped his commbadge. "Chakotay to Captain Janeway."

"Janeway here."

"I'm going to be late for our briefing." Chakotay tried to make his voice sound normal, but the pain was increasing again.

"Is there a problem, Commander?" Her voice held concern.

"Excuse me, Captain, but I'm trying to exam the commander," the Doctor interrupted. "I will keep you informed."

"See that you do. Janeway out."

The Doctor grunted and hummed as he finished his examination. Finally, he set his tricorder aside and picked up a hypo-spray. "This should help relieve the pain," he told Chakotay as he pressed the instrument against the commander's neck.

Almost immediately, the throbbing began to ease. Chakotay closed his eyes as the relief washed over him.

Chakotay opened his eyes again. "Do you have any idea what caused the headache?"

"Not yet," the Doctor answered. "Since I can't find anything specific that would cause the pain, I'll analyze the scans I took and get back to you as soon as I know."

"Thank you, Doctor," Chakotay said gratefully. "I'll be on the bridge."

Chakotay took a deep breath as he exited the turbo-lift. He walked to his chair and sat down. The sights and sounds of the everyday activities on the bridge soothed him. He decided to wait a few minutes before heading for the ready room.

Suddenly he felt a kick of pain in his temples. Chakotay shook his head to try to clear it. The ache lessened after a few minutes.

He needed to let Captain Janeway know what else he learned from Kellin. The pain pushed at the base of his neck as Chakotay made his way to the ready room. He all but stumbled in when the captain called out for him to enter.

"What's wrong, Chakotay?" Janeway moved from behind her desk and helped him sit down. "Weren't you just in sickbay? The Doctor just told me that he was going to need time to go over the results of the scans, but that he gave you something for the pain."

Chakotay sat with his eyes closed for a few seconds before he answered, "He did and it worked for a while." He rubbed the back of his neck. The pressure in his head eased as he thought about what to tell the captain about Kellin and the work they accomplished.

When he opened his eyes again, Chakotay saw the concern in the captain's eyes. "I'm feeling better now." He took a deep breath and let it out slowly. "We made the modifications to the Astrometric processors. They should do the trick if we have more Ramuran visitors."

"Good, but what about her in particular? Are you still hesitant to trust her?"

"As I told you in the staff meeting, Kellin claims to have been on Voyager before, and she knows a great deal about us, but that isn't the most outlandish thing she's said."

"There's more?" Kathryn asked incredulously.

"Yes," Chakotay pulled a face as he responded. "She told me that she and I were involved."

"Involved?"

"That we were 'in love'." He shrugged dismissively.

Kathryn stood and began to pace. She moved her right hand to her temple and began to rub it. "It just doesn't add up, Chakotay. Do you believe her? What does she want from us?"

Chakotay joined her in the middle of the room, stopping her movement by touching her arm. "I have no memory of her at all. Log entries from her ship show that she was along side Voyager for weeks. However, those could've been falsified, or she could've observed us undetected, which would explain her knowledge of Voyager."

Frowning, Janeway lifted her other hand to rub the opposite side of her face. "I wonder if headaches are contagious."

"You have one too?" Chakotay's voice was full of concern. "Maybe you should go to sickbay. Let the Doctor have a look." As he spoke, his own throbbing worsened again.

Suddenly Kathryn stared ahead without focusing. For several seconds, she didn't move or speak.

"What is it, Kathryn?" Chakotay concern turned to worry.

"I just had an odd flash of something like memory, but I know it isn't a real one." Kathryn closed her eyes and shook her head.

He reached out to touch her arm when a vision of Kathryn wrapped in his arms made him gasp, first with longing and then in pain. Chakotay grimaced as he asked her, "What kind of memory?"

Kathryn shook her head again. "It's nothing, nonsense really. Actually impossible." She continued to rub her temple.

"You look pale." Chakotay said softly. "You should see the Doctor."

"I'll be fine, Chakotay." She moved away from him and sat behind her desk. "Get back to Kellin, but keep your eyes and ears open. And see if there is more she can do to help us defend against a Ramuran attack. They don't seem too interested in communicating with outsiders."

"Aye, Captain," he replied without further comment even though he was worried about Kathryn. At least as he turned away, the pain in his head had begun to subside again. "I'll see what I can find out."

Although he was reluctant to leave the captain in such obvious distress, Chakotay knew how to follow orders. Walking through the ready room door, he glanced back over his shoulder. He saw that she was busy reading a PADD. Her face was no longer registering any discomfort. Reassurance that she was okay fortified him for his next duty.

As he rode the turbo-lift to the crew quarters' level assigned to Kellin, Chakotay tried to understand what had just happened. The answer seemed as elusive as an old tune whose lyrics teased and evaded the conscious mind. No matter how hard he tried to remember, the answer wouldn't come to him. He sighed, deciding to let his psyche work on the problem and reveal the solution in due time.