relationship war, spying and snooping, via surveillance footage like this, recorded secretly a michelle russell. she'd been living with marcus for three years when she started to suspect he wasn't being faithful. >> tell me he had to work late a lot of approximate rushing off the phone when i would call him. i'm like, that's weird. >> have suspicions and want to conduct your own investigations? >> she turned to cheaters, which provides do it yourself spy equipment to lovers with suspicions. >> they gave me a clock cam, basically it has a camera already installed, i just had to place it in my living room. and when they called me to look at that footage, i was like, wow. >> all caught on camera, michelle's fears seem to be confirmed. >> we've identified this young woman as an intern at the business where marcus works. >> are you kidding me? >> reporter: moments later, she kpronts him while he's out with the other woman. >> marcus! in my bed that we laid in for three years? >> it's not the truth. >> what do you mean? it's on camera. >> reporter: michelle is not the only one spying on a loved one t