Merciless — Bryan Smith

Psycho newlyweds Grant and Lindsey Weatherby are true crime junkies with a thirst to know what it feels like to kill for real. Young, prosperous, and good-looking, they are seen by friends and family as the perfect couple. No one sees the dark side to their love. After their wedding, they embark on a trip across the country. As their honeymoon gift to each other, they plan to abduct, torture, and kill a stranger. But what was planned as a controlled one-time event soon explodes into a spiraling orgy of bloody, nightmarish violence and depravity.