She'll eliminate the competition... permanently.

The Temp (1993)

Directed by Tom Holland

Peter Derns, an executive at Mrs. Appleby's Cooke Company, fears his future prospects are crumbling fast, until the arrival of Kris Bolin, a gorgeous, cooly efficient temp - and sultry temptress - who helps him develop a marketing campaign that slays the competition. But after two executives mysteriously die, Peter discovers his job security may vanish due to the one person he needs to trust: his temp.