Tonight on TV

“Ghost Whisperer” (8 p.m., CBS): On the season finale of “Ghost Whisperer,” a ghost pays an unexpected visit to Melinda, who begins to worry for her unborn baby. We smell a cliff-hanger.

“Prison Break” (8 p.m., Fox): The roller-coaster ride that is “Prison Break” comes to an end tonight as a few familiar faces return to help Michael take down The Company once and for all.

“Hotel Babylon” (9 p.m., BBC America): Paula Abdul, John Barrowman and Michael Landes check in, but not at the same time. That would be weird.