Perfect Stranger (2007)

When investigative reporter Rowena Price learns that her friend's murder might be connected to powerful ad executive Harrison Hill, she goes undercover with the help of her associate, Miles Hailey. Posing as Katherine, a temp at Hill's agency, and Veronica, a girl Hill flirts with online, Rowena surrounds her prey from all sides, only to discover that she isn't the only one changing identities. The closer Rowena gets to finding the truth, the more we see how far people will go to protect it.

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