What does make them think he was being dishonest? Bastien's quick glance at Derrica carries the question, in abbreviated form, but it's a rhetorical glance.

"I think," he says, in a hazarding tone, "we would prefer to think better of the Chantry and its Templars."

Not something he thinks Derrica is interested in, actually. Maybe it's true of the Seeker. And maybe it's half true of Bastien, who would like to think better of everyone.

"We have worked very well with the Chantry for so long. We have some of your fellows among us. But now here you are, seizing our man instead of coming by to let us know you needed to talk to him. Leaving another for dead. Shooting as us when we were trying to talk. Très malpoli, vous savez? I thought we were friends."