Double Exposure is a 1994 crime drama, starring Ron Perlman, Ian Buchanan, and Dedee Pfeiffer.
[1][2] The Putnams, Roger (Ian Buchanan) and Maria (Jennifer Gatti), continue an unstable marriage.
On Tuesday and Thursday nights, Maria is allowed out for a gym workout with their mutual friend and his colleague, Linda (Dedee Pfeiffer), but she gets home so late that he presumes she is up to something behind his back.
He hires private detective John McClure (Ron Perlman) to find out if she is cheating and with whom.
Enter a young homicide investigator (William R. Moses) and a forensic scientist who knows how to analyze a nanogram of dog excrement and human vomit to discover the actual identity of the killers and the lover.