'House' welcomes Jennifer Morrison back for series finale

Add one more name to the list of past "House" cast members returning for the series finale.

Jennifer Morrison will make a brief appearance as Dr. Allison Cameron in the May 21 finale, TVLine reports. She joins fellow returnees Olivia Wilde, Amber Tamblyn and Kal Penn.

Penn's presence in the episode suggests some sort of dream or flashback scene, since his character committed suicide in Season 5.

Morrison was one of "House's" original cast members, and Cameron was the most empathetic doctor on House's (Hugh Laurie) diagnostic team. She had a crush on House early in the series before starting a long-term relationship with Chase (Jesse Spencer), which eventually led to marriage, then divorce and a final hookup in Morrison's final episode midway through Season 6.

"House" will air its season finale at 9 p.m. ET Monday, May 21, with an hour-long retrospective special preceding it at 8.