Gillian Barber

Film Deaths[]

Needful Things (1993) [Myrtle Keeton]: Beaten to death (off-screen) with a hammer by J.T. Walsh. We see her cowering away from J.T. followed by a scene of him washing the blood off the hammer; her body is not shown.
Jumanji (1995) [Mrs. Thomas]: suffering seizures from a Mosquito bite and taken to hospital. Her fate is unknown due to the reversal of time after Robin Williams won the game.
2012 (2009) [Cruise Ship Lady]: Drowned along with everyone else on the cruise ship (Genesis) when a tidal wave capsizes it.
Hamlet (2011) [Gertrude]: Poisoned when she drinks the wine that Peter Wingfield had intended for Bruce Ramsay.

The X-Files: Memento Mori (1997) [Penny Northern]: Dies (off-screen) of brain cancer; we learn of her death afterwards when Gillian Anderson informs David Duchovny. (Thanks to Michelle)
First Wave: Hypnotic (1998) [Dr. Rita Hagen]: Commits suicide (off-screen) by taking an overdose of pills, after being compelled to do so by Julie Patzwald's hypnotic powers. Her body is shown afterwards when Sebastian Spence discovers her. (Thanks to Stephen)
Beyond Belief: Fact or Fiction: Room 245 (2002) [Rena's Mother]: Possibly either dies of a bacterial infection or ceases to exist; she is last seen in her hotel room when her daughter (Emily Holmes) leaves to get her some medicine, and when Emily returns, Gillian is gone and the furniture of the hotel room has been changed, heavily implying that the hotel manager (Peter Wilds) and the doctor who tended to Gillian (Peter Hanlon) covered up her death.
Supernatural: Who We Are (2017) [Dr. Hess]: Shot in the head by Kim Rhodes after Jared Padalecki refuses to negotiate a deal with Gillian and she tries to shoot him.
The Man in the High Castle: Imagine Manchuria (2018) [Alice Adler]: Hit in the head with a heavy glass ashtray by Chelah Horsdal during a struggle. Her body is shown again in the next episode Sensô Kôi.