Found this from 3 years ago, following the events of this thread where Adon gets his cubicle gift-wrapped, and wanted to post the plot-relevant tidbit that followed.

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"Adon!" Dreogan said brightly, seeing his brother walk through the door of his office, fresh back from his trip to Jerusalem with Jonas. Dreogan had  spent a good deal of time yesterday preparing all the sundries developments so he could catch his brother up to speed.  There'd been a lot of ground to cover in their investigation into Tiresias Katsaros, the attack on Akiva, and Topluluk.   

Dreogan had been so eager to express it all, to have the assistance of his brother--there, actually present--that he wasn't sure he'd expressed to Adon just how happy he was to see him.  So happy, in fact, that his heart ached a little as Adon came in, mumbled a grumpy good morning, and settled himself down silently in the chair across from Dreogan with a casual easiness.

Sitting there, sharing the silence, brought an unspeakable feeling of comraderie, of easy sympathy. . . Sharing the same troubles, concerns, same thoughts. . . it was easy for Dreogan loved his brother as well as himself--because, with so much in common, sometimes it did not feel too different.

"What's wrong?" Dreogan asked.

"They wrapped my cubicle up in Hanukkah paper. I demolished them."

Well, maybe not everything in common."Tea?" Dreogan deflected.

"You have coffee?" his brother grumbled out. "I was out; Level Two's out.  Couple of rude awakenings this morning..."

"Mona will," he said, scratching a note out onto parchment and folding it into a paper airplane.  It glided out the open door, to his assistant.  Having sworn off caffeine (in an attempt to break free of the cycle of stimulants and sleep potions of last year), Dreogan had insisted, however, that his assistant keep ample supply for his staff. 

Adon nodded silently. "I'm meeting with Archer in a couple of hours.  About the case." The Case meant only one thing these days. 

Dreogan nodded, reaching out for his tea to have something to swallow, casually. "Maybe I should...?" He tentatively offered.

"You'll be involved in this, Dree. But I don't want to waste your time right now.  There's a lot still in the air." His brother grew in intensity, sitting forward in his seat now.  His fist beating against his open palm. Any grogginess from caffeine deprivation had been replaced by an intensity that made Dreogan uneasy.  "We're not dropping it this time; like with Av.  We can't stop now. We've got to--"

Adon seemed to notice the shift in Dreogan's expression, the way he'd set his teacup down; the way he'd frowned.  Adon was not always the most perceptive of the feelings and thoughts of those around him--particularly when he was caught up in his own--but they knew each other, and Akiva had said more than once Dree was as easy to read as a book. And who better than a librarian to make that assessment.

Adon looked at him expectantly.  Dreogan, looking down a bit awkwardly, said, "Adon, I appreciate all you're doing-- with everything--but have you considered. . . I think it would be better if you were as minimally involved as possible."

Adon felt as though the breath had been knocked out of him.  The betrayal was unexpected and bitter, and he looked away.  "And why?"

"I should think you know why I feel that way.  You know how this ends."

"And who is to say that my investigation of it will lead to that end? How can you be sure that it is not my not being involved that leads to that? Dree, no one knows your history with Topluluk better than I do. I know them better than any other other investigators here.  And I'm your brother."

Dree was quiet.

Adon gave a bitter laugh, a smirk on his face.  "Come, now, brother. Don't be selfish. It's not just your kidnapping coming around the corner. It's my murder."

Dreogan set his jaw.  "Stop it!  That's not funny."

Adon's gaze was challenging.  "No. It isn't."