Idiom
clue someone in (on something)
Theme: COMMUNICATION
to inform someone of something. (Informal.)Please clue me in on what's going on.Yes, clue her in.
Slang
clue someone in
Theme: EXPLANATION
tr. to set someone straight (about something); to inform someone of the facts.What's going on? Clue me in.I think I'd better clue in Sam about the rally.
Idiom
clue someone inclue (someone) in
to give someone information they need or want.I asked David to clue us in on what needed to be done first.He hung the painting to clue in visitors that this was a different kind of place.