Maskarrans were trained for interrogations, both giving and receiving. One did not attain even the first rank of the priesthood without proving they could hold onto a secret despite the torturers bite. Leon was no exception to this rule and as soon as it became clear that Jadarl was asking a question his face became completely empty. Even his thoughts became a grey line. Mind reading magics and truth potions were common enough in Faerun, if one wanted to keep a secret, one had to build defenses ahead of time.

Of course, that didn't help him determine -why- Jadarl wanted to know. It was possible he was being honest, that he was afraid of someone or something out there that could be such a threat to him he needed to know if he should jump ship.. but what?

And why did Jadarl say there were three of them... when there were four involved in the raid on his house. Five technically. And Ibdur hadn't even been a part of it. 

"That's easy enough. We are simply a band of... reasonably talented individuals that required some work. With our skill set that does tend to drift towards skullduggery as a preferred method of coin. As you can imagine working for or against the Red Wizards sounds like a terribly good way to end up either undead or just plain dead dead. So that leaves your little slice of heaven down here. We make our way to the bar... we have a good time... we put out our usual feelers for work and well... this halfling man comes up to us and says he happens to know the location of a house that belongs to a somewhat wealthy alchemist. The raw coin potential ain't much, but gods damn the opportunity to filch some real magical potions? So it was nothing personal, unless you've pissed off a woefully inept halfling burgler recently," Leon related, purposefully stretching out his words and the story, carefully weaving truth into his lie. It was possible he was selling out Willory, but any wizard worth a divination spell would have already known about the other thieves. 

Still, he really hoped Iliskra was able to take some kind of advantage from him running his mouth.

"So I'm afraid we're simply caught up in the middle of a job gone wrong where it seems we were left holding the bag. If you're looking for a conspiracy to hunt you down, I'm afraid you would have to ask that halfling... Tiny Tom I think was his handle, has a thing for elven womenm" Leon said, the last bit a deliberate lie to test for any obvious truth detecting magic.