Investigation Discovery continues its heritage of providing in-depth  compelling documentaries & shows.

Investigation Discovery

A paralegal starts an affair with her boss, but her husband of two decades catches on, and someone gets the ax; a soldier's love for the army means his wife has plenty of time to play, but when he goes AWOL to find her lover, it's all out war.

Deadly Affairs: Betrayed by Love

War and Cheats

A couple's marriage suffers when the wife starts cheating and never stops; she turns a guest into her newest lover, and one man pays with his life; a married singer finds love with a musician, and what happens next could make a sad country song.

Southern Harm

The deployment of a military man does nothing to improve relations with his wife, and when he returns to find her cheating, the battle is on; a woman finds marriage rather dull until she gives an old classmate lessons on passion and murder.

Bored to Death

A couple try swinging to salvage their marriage, but when that fails, divorce seems imminent until one spouse has a killer idea; a gun-collecting man meets a woman who shares his love of firearms.

Taking A Swing at Murder

A pizza flipper embarks on an affair and impregnates both his wife and lover; he decides the only way out of this heated love triangle is murder; then, a couple proves that absence can make the heart grow deadlier.

Lost in a Love Triangle

Super Bowl champ Shaun Gayle and his beloved enjoy a happy relationship, despite his roving eye; one of his conquests decides she's no longer playing second string; a 13-year union literally runs out of steam, but someone still gets burned.

Cheaters Never Win

A couple's whirlwind marriage deteriorates when the workaholic husband drifts from his neglected wife, and she begins an affair with deadly consequences; a married teacher starts a taboo dalliance with the troubled student they take in.

Marriage Fails

A philandering cop avoids an expensive divorce in the worst way possible, and a bored wife seeks excitement in a chat room where she meets a romantic Italian stranger; as their relationship ignites, he does something that devastates her life forever.

The Things He Did For Love

A school administrator and his wife begin building their dream lake house, but as costs run amok, he seeks solace in a new love; once his wife finds out, the punishment is far worse than detention; a man pays the price for allowing an open marriage.

A Lesson in Murder

A police officer's two-decade marriage to his college sweetheart disintegrates into betrayal and violence; a married couple bond over their love of dirt track racing until a gorgeous younger man arrives on the scene, but he's no prince charming.

Racing Hearts

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S2 E4 | Marriage Fails