It Wears Your Face

Dr. Laura Samuels researches a shapeshifting alien, Chimera, until her boss force-mutates it and it slaughters the crew. Rescued by ex-fiance Rooker's corporate squad, she finds Chimera now wears anyone's face, using hallucinations and stolen bodies to infiltrate, impregnate, and pick off survivors. As paranoia fractures the team, Laura and Rooker find its salt weakness, destroy the station, and flee together, only for the final shot to reveal an eye blinking open aboard their own ship.