John Walsh profiles Mike Bullinger's secret double life that police believe ended in a triple homicide. Callahan Walsh looks at the case of Tomas Magallon Gonzalez, who allegedly abused his stepdaughter for years before taking her life.
John Walsh investigates how Eric Jones, the son of a preacher, allegedly turned to murder. Later, Callahan Walsh tries to make sense of how a dispute over a dog could provoke Ricardo Villanueva Cordova to reportedly commit murder in broad daylight.
John Walsh profiles Juan Lazaro Abrego who is believed to have murdered his ex-girlfriend, a beloved teacher. Callahan Walsh investigates Derek Dean, a St. Louis man accused of shooting a pair of twins, killing one and wounding the other.
While Janett Reyna's work helped women affected by domestic violence find refuge, her own safety was constantly at risk because of her jealous and violent common-law husband, Luis Frias.
When an insidious sexual predator is discovered in plain sight, John helps police in the pursuit of dangerous James Meese. After a brutal home invasion, Cal goes into the field to help police track down the dangerous James Watts.
When a costly mistake allows a criminal to escape justice, John steps in to help investigators in pursuit of felon Lester Eubanks. And Cal looks into the case of William Stanson, a supposed loving father to turned out to be and sexual predator.
John follows the trail of fugitive Leroy Headley whose 911 call sends police down a dark and twisting path that unravels a history of violence. Cal uncovers hidden truths behind the case of Jeffrey Forrest, a dangerous sexual predator on the run.
An unbelievable tragedy ripples through a small community and sends John in pursuit of outlaw Jory Worthen. Callahan takes on the case of fugitive Derrell Demon Brown, an offender with a dark past who committed a violent, personal crime.
After a vulnerable elderly man is brutalized in his rural home, John joins a manhunt for Derek Whisenand. When newlywed bliss turns into a vicious crime, Cal goes on the trail of fugitive Arnoldo Jimenez.
John Walsh spotlights freshman Jihad Ramadan, who allegedly introduces a knife to a fistfight that claims a star college student's life. Later, Callahan Walsh looks for Thayne Smika, who, police believe, shot his roommate in cold blood.