A/N: This is set during season 4 but before Will gets "called back" to the FBI :) As always, please review if you want me to continue :)

Warning: Suggestions of possible f/f encounter... ;)

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Old City Sanctuary – Helen's Study

Helen Magnus, medical doctor and head of the sanctuary network, leant back in the comfortable leather chair pulled close to her desk and watched the images from the various cameras around her sanctuary. It was a ritual she performed several times a day, to satisfy herself that all was well with her residents. Three weeks had passed since Wena had arrived with them, and Helen was no nearer to understanding who, or what, she had given sanctuary to. A smile tugged at her lips as she thought of the many phone calls and emails she had received from Declan since he had delivered Wena to of them. Although she would never mention it, Helen knew how much of an effect Wena had had on her London head of house, and she was determined to make the pair work out their issues. Looking again at the monitors, her gaze came to rest once more on the images of Wena in her room. Since her initial discussion with Will, the succubus had become withdrawn and reticent, showing no interest in anyone or anything around her.

The blood tests that Helen had run had proved inconclusive, giving conflicting results each time they were processed. Something which did worry her was the presence of vampire DNA in Wena's blood. A horrifying notion had occurred to her; perhaps Wena had, during any period of captivity she had experienced, been experimented on. It was a notion that Helen quickly dismissed, for unlike those who had injected the source blood, the DNA strands in Wena's makeup seemed to be native. That very fact alone suggested to Helen that whoever sired Wena had had dormant vampire DNA. As the world's foremost expert on the extinct vampire species, Nikola Tesla would be able to help Helen identify Wena's origins, and so she had sent out a message asking for his help.

To the best of her knowledge, a pure blood succubus had no trace of vampire DNA, nor was telepathy an ability they possessed. As far as she knew, vampires also possessed no telepathic ability and yet Wena did. The abnormal was proving to be an interesting and challenging puzzle, but one that Helen was determined to solve. Her scientific curiosity was piqued by the knowledge of the seduction scent which Declan had told her about, something else that a pure blood succubus did not possess. Drumming the fingers of her right hand against her wooden desk, Helen planned out how to investigate the phenomenon further.

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London Sanctuary – Declan's Office

Declan jotted a few notes on the final page of the report he was reviewing and closed the folder, placing it on top of the pile of identical folders. It had been a long morning and he was glad that he had finally finished his current workload, for it meant that he could now settle down and watch the security feeds from Old City. When he first woke each morning, before he started work, he watched the live feed which usually consisted of Wena getting ready for bed. He knew his behaviour wasn't entirely proper but he could not resist watching her, for each night when he went to bed his dreams were filled with her. His nights, in his dreams, were spent with her, tasting her, touching her; buried deep within her as their bodies, minds and souls joined and became one. As hours became days, and days had become weeks since she'd left, he began to understand just what he had given up.

He opened his laptop and logged on to the system, entering the security code that would allow him access to all the video feeds. Although he wasn't supposed to know, Declan was aware that he was the only other head of house who had access to the camera feeds to every sanctuary around the world. He knew that his assistant David, one of the werewolves freed from Oldham who had joined his staff, had arrived in Old City a few hours before. He carried with him a letter from Declan addressed to Wena, in which the London head of house attempted to apologise for his actions. Shaking his head, he focused once more on the camera feeds and could only stare, stunned, by what he saw happening before him.

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Old City Sanctuary – Wena's Room

Wena did not look up, or even acknowledge, when the British HAP David walked into her room and closed the door behind him. He walked slowly across the room and gently sat on the end of the bed opposite her, not making a sound as he waited for her to look up. When she finally made eye contact with him, he still didn't speak but simply handed her the envelope that Declan had given him. As she broke the seal and drew the parchment out of the envelope, David remained where he was, waiting for her to read the words his boss had written. She hungrily devoured the words that Declan had penned; her face, which had been devoid of emotion since her arrival, showed a gamut of emotions as she read and re-read the letter she had long been waiting for. What she had not realized, however, was that as she released the emotions she had kept bottled up for so long, she was also inadvertently secreting what Magnus had termed 'the seduction scent'.

David's long fingers, gently stroking her bare foot, immediately pulled Wena back to the present. She looked up, locking gazes with the young werewolf and carefully re-folded Declan's letter, placing it under her pillow to read again later. Suddenly feeling the need for physical contact, which she had steered away from for many years, she allowed her scent to permeate the room, encouraging David to move closer. As if his fogged mind had momentarily cleared, and he realised what he was doing, the young HAP stood suddenly and took several steps away from the bed, as if distance from Wena could lessen her pull over him. He didn't realise that as long as he remained in the room, her scent would affect him. Kneeling provocatively on the bed, she beckoned the young werewolf to come closer. Unable, or perhaps unwilling, to fight against her inviting summons, David closed the distance between them, gathering her into his arms and kissing her gently. She responded with a passion and hunger that surprised and stunned him, and he fought to remain in control as his own desires raged within him.

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London Sanctuary – Declan's Office

Declan's stared in disbelief at the images from the security camera feeds, watching as Wena seduced his young assistant. When he had sent David to Old City, he had not even thought of the possibility that what was now happening, could ever take place. Unable to look away, he watched in growing pain as the inexperienced HAP made love to the woman Declan was falling in love with. His heart constructed as David left the room, and he watched Wena curl into a ball and begin to cry. Holding back the tears that threatened to overwhelm him, as he saw Wena reach beneath her pillow and withdraw his letter, he reached for the phone and hit the speed dial for Helens private number. It rang only twice before Helen answered.

"What can I do for you, Declan?" she asked, her tone polite but colder than usual.

"Magnus," he began, struggling to keep his anger in check. "What on earth is going on over there? Why he was David in Wena's room?"

"That is none of your concern, Declan," she answered him brusquely.

"Like hell it's not," he argued, his voice rising slightly. "I sent her to you, for you to find out what she is, and how to protect her; not for you to play games with her and use her in such a way!"

"Declan," she replied, her tone kinder than before. "In order to ascertain the full extent of what she is, I need to know how her power affects different groups."

"I'm not sure I understand," Declan confessed.

"We know the scent she emits worked on humans," Helen told him. "What I need to know, is whether it works on abnormals as well. With David being a HAP, it seemed the ideal opportunity to test that theory."

"Well, now that you know," he continued. "Could you please ensure it doesn't happen again?"

"I'm sorry, Declan," she replied. "But I still need to know the full extent of her power."

"What do you mean?" he demanded. "Who else is there for you to experiment with?"

"I still need to know," she explained. "Whether her power has any effect on those with source blood, or vampire DNA."

"Now wait just a minute Magnus," he objected angrily. "You cannot subject her to Tesla or Druitt."

"As neither of them are here," she informed him calmly. "I would be unable to do so. Nor would I, even if either of them were here."

"Then how do you intend to find out?" he asked, confused. When he got only silence from the other end of the line, he wondered momentarily if they had been disconnected. It took a few moments for her words, and the meaning behind them, to finally sink in and when they did, he gasped in shock. "Do you mean...?"

"Yes, Declan," she confirmed, keeping her voice even, as she suppressed the smile. "I do indeed."

"Oh," was his only reply, as the obvious thoughts popped into his mind. He knew better than to ask whether the camera in Wena's room would remain active during her little experiment.

"Now," she said calmly. "If there's nothing else?"

"No, no, nothing at all," he confirmed, managing to keep the laughter out of his voice.

"Then I'll bid you goodnight, Declan," she replied. "After all, I have more tests to run."

"Yes of course," Declan said. "Good night Magnus." As he hung up the phone, a smile spread across his lips. Slipping the laptop under his arm, he headed towards his bedroom, fully intending to be as comfortable and private as possible while he watched Helen test that theory.

So, that gives some interesting mental images LOL :p