Supernatural (2005)

S5E9 The Real Ghostbusters

Becky, an enthusiastic fan, manipulates Chuck's phone to lure Sam and Dean into a Supernatural fan convention, where attendees are dressed as the iconic brothers. Among the activities, a live-action role-playing game is set to take place. However, the fun takes a dark turn when a genuine ghost materializes, disrupting the festivities and putting everyone in jeopardy.