The paralysis passed off. His lungs filled with oxygen. His feet obeyed him. And he walked down the sidewalk with a surefootedness that belied his idea of himself as a cripple.

When he greeted Riker at the door to the reception area, Charles Butler wore the vest, but not the jacket to his tailored suit, and this was his idea of casual attire. Strands of light brown hair curled past his collar, for though he possessed eidetic memory, he never seemed to remember a barber's appointment. But that was not his most outstanding characteristic. The man had once described himself as the bastard child of Cyrano and a pop-eyed frog. Though his eyes were heavy-lidded, the whites overwhelmed the small blue irises, giving him an air of constant astonishment, as though every word said in his company was absolutely fascinating. Oh, and that nose – what a magnificent beak. He sat behind an eighteenth-century desk. Most of the furnishings at Butler and Company were antiques, except for the couch that was custom-made to accommodate very long legs. Charles stood six foot four in his socks, but just now he slouched low in his chair, for he thought it rude to hover over visitors of normal height, even while sitting down. Among his other quirks was a monster IQ and an equally staggering generosity.

Riker had never believed the reason for the low rent on his own apartment one flight below. His old friend and new landlord still maintained the fiction that he felt more secure with a police presence in his building, even though Charles had the size and strength to pound the average human right into the ground. But that was not his nature. He was the most pacific of giants. Also, there was already one cop in residence; the building superintendent was a retired patrolman. And then there was his silent partner, Mallory, and her expertise in electronic burglar alarms and state-of-the-art locks. This might be the most secure building in New York City. So the cheap rent was a gift of charity disguised in a lie told by a man so hobbled by honesty that he could not run a bluff without blushing.

However, Riker had had nowhere else to go.

Returning to his old apartment in Brooklyn had never been an option. The prospect of entering that place one more time had been the stuff of nightmares, waking and sleeping. And so, upon his hospital bed, he had handed his keys to the moving men with instructions to steal what they liked – but to leave the rainy-day stash of good bourbon intact. That rainy day had come.

"Has Mallory been by?"

"Not today," said Charles. "She's been rather busy lately."

"You mean with her crazy job?"

"Well, yes. When she does come by, it's usually late in the evenings. Hence the term moonlighting."

Kathy Mallory's second source of income was unauthorized, for cops were forbidden to use investigative skills in the private sector, but Riker well understood her interest in this place. Down the hall, she kept a private office where she housed her favorite toys. Most of them required a judge's warrant to operate or even to possess them. Fortunately, Charles Butler was a committed Luddite, who would not recognize the electronic equivalents of lock picks, and who no doubt believed that she used all her equipment to run the background checks on their odd clientele.

Mallory's boss at Special Crimes Unit was equally deluded. Lieutenant Coffey was still pretending that she had followed his direct order to sever all ties with Butler and Company. Instead, she had submerged her financial interest in the small firm of elite headhunters, becoming an invisible partner. And now this office was a warrant-proof squirrel hole, the perfect place to leave the suitcase of files and notes removed from Jo's hotel suite. If Detective Flynn had discovered Riker's interference, he would have papered the city with warrants to find his missing evidence, and he would have started with Riker's apartment. But this was no longer a problem. As Mallory had predicted, the FBI had hijacked Bunny's homicide, and feds were less diligent than Flynn.

"I suppose you'll want your property back." Charles stood before the open door of a closet and pulled the red suitcase down from a high shelf, handling this heavy luggage as if it weighed nothing at all. It would have been normal and natural to ask why Riker had stashed it here instead of in his own apartment downstairs, but Charles had been hanging with Mallory for too long, and he had learned to regret asking questions. Instead, he said, "Mrs. Ortega will be sorry to have missed you. She asks about you all the time."

That was odd and touching news, for Charles's cleaning lady, under normal circumstances, would rather be shot dead than admit concern for Riker. He was her favorite target for caustic remarks. "Tell her I said hello."

"I will," said Charles. "It seems that we see less of you now that you live in the same building. Are you getting enough heat and hot water? Any problems I should be aware of?"

"Naw, everything works great." Riker was rising, reaching for the suitcase, more than ready to take his leave. He had the sense that his friend was checking him for unplugged bullet holes and other signs that he was not quite mended. But then he realized that he did have a use for a man with a Ph.D. in psychology. "You know, there is one thing you could help me with – if you've got a few minutes."

"Of course." Charles inadvertently smiled like a loon, and he was all too aware of this unfortunate characteristic. His skin was deeply flushed with every happy expression, an apology of sorts for his foolish face. "My time is yours."

Riker settled back into the armchair. "It's about paranoia." He noticed the sudden concern in his friend's eyes, then hastily added, "Not me. This is another guy. You test people for oddball gifts. What about paranoia? We're talkin' wigged out, full-blown, to the nth degree. Could you see that as a useful talent?"

Charles, bless him, gave every stupid idea polite consideration. A few moments passed, and then he said, "Well, that's the sort of thing I'd try to fix with a psychiatric referral. Encouraging paranoia would be unethical. And there's really no market for mentally ill employees." He considered his own clients to be merely eccentric.

But Riker had other ideas. The job applicants of Butler and Company had rare talent and high intelligence prized by think tanks and government projects, and they were frequently a hair away from crazy, neatly explaining this man's vast expertise in abnormal psychology.

Head tilted to one side, Charles was having second thoughts, or perhaps he simply disliked disappointing a friend. "Well, I suppose it might have some applications. If your man worked in a dangerous environment, extreme paranoia could give him an edge in staying alive."

Riker had anticipated that much. New Yorkers who were not the least bit neurotic were listed on police blotters as the dead and wounded. A mild case of paranoia was considered a sign of good mental health, for it made people wary of strangers and dangerous streets. But Agent Timothy Kidd had been the king of paranoia, and he had not managed to stay alive in Chicago, a town with a lower homicide rate.

"Okay, suppose my guy is an FBI agent tracking a serial killer? Would paranoia give him an edge in dealing with suspects?"

"Bit of a stretch," said Charles. "But it might – if it shows in his outward behavior, and that's usually the case. His overt suspicion would increase the pressure on the person he was interviewing. The suspect might exhibit more enhanced reactions, involuntary facial expressions and nervousness – all the giveaway signs of a lie. A full-blown paranoid could pick up on all of that, consciously or unconsciously. However, here's another aspect to consider. A paranoid is working with more perceptions than the average person, taking in details and information that you or I would rightly deem irrelevant. That's the downside to your theory. They frequently detect patterns that simply aren't there."