I just wonder: could Dan be an actor too?

Did Emma slip up during the interviews?
Dan seems a most unlikely ex-policeman. But I could see him as an actor, very easily.
It could be another of the secrets and lies. Dan and Michael both being actors - and knowing each other were too: with Dan being instructed to suss out Michael as a way of drawing attention away from his own role, which is to be the actor who is in there for the long term.
Just a thought!