The Morning After (1986)

Failed actress Alex Sternbergen wakes up hungover one morning in an apartment she does not recognize, unable to remember the previous evening -- and with a dead body in bed next to her. As she tries to piece together the events of the night, Alex cannot totally rely on friends or her estranged husband, Joaquin, for assistance. Only a single ally, loner ex-policeman Turner Kendall, can help her escape her predicament and find the true killer.