Ghosts S02E05 - Bump in the Night

It's the first time Mike has been left alone with the ghosts at night, but he assures Alison she should have a night out and let her hair down. The ghosts happily pass the time with music club, but they're interrupted by some uninvited guests. It becomes the ghosts' mission to try to alert Mike and figure out how to protect the house from the intruders.