Betrayal at House on the Hill -- what counts as a turn for attacks?
The Traitor always gets to move and attack with each monster, separately, after they have finished their own turn (unless a Haunt-specific rule tells you otherwise, of course).

From the second edition rulebook (page 17, or page 12 if you are cross-referencing the first edition rulebook):


  After you finish your turn, you move and attack with all of the monsters, if any.