So what time DID he get home? How was the luncheon?
Have you ever thought of learning how to catch him in a lie? If so, I can give you the name of a book I bought last year ...called "Never be lied to again".
Your H's reactions to your telling him about the dreams and "seeing things" (for example?) COULD suggest he's worried and has something to hide.
OR it could be that this is a highly charged dynamic between the two of you...you've had dreams and "discussions" regarding them that no doubt were unpleasant.
So his nervous reactions could have been elicited by this.
You know your H best...you know your "gut" best...