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Barry Thomas (Jonathan Silverman) lives an unexciting life as an office worker at a science lab, where he has fallen in love with a brilliant, attractive young scientist named Lisa Fredericks (Helen Slater). Barry is devastated when he witnesses Lisa's murder in the office parking lot. However, when he realizes that a bizarre electrical accident at his company's lab has left him in a 24-hour "time loop," he attempts to save Lisa and return to a normal timeline. Wikipedia