John profiles fugitive Leroy Headley, who called 911 claiming to have shot his girlfriend, Anako Lumumba; Cal goes to Abilene, Texas, to learn more about a tale of predatory sexual abuse involving a predator whose own wife reports him to police.
A tragedy in a small community has John Walsh pursuing an outlaw named Jory Worthen, while John's son, Callahan, takes on the case of fugitive Derrell Demon Brown, an offender with a dark past.
A costly mistake allows criminal Lester Eubanks to escape justice, so John steps in to help investigators; Cal looks into the case of William Stanson, a so-called loving father who turned out to be a sexual predator.
When a double shooting leaves one woman dead and another clinging to life, John joins police on the trail of fugitive Lenell Kirby; Callahan takes on the murder of a dear Walsh family friend, Lindsay Harris.
After a vulnerable elderly man is brutalized in his rural home, John joins a manhunt for Derek Whisenand; then newlywed bliss turns into a vicious crime, so Cal goes on the trail of fugitive Arnoldo Jimenez.
John joins police on a strange and twisting missing persons case that turns fatal, sending investigators on the trail of Alejandro Castillo. And Cal takes on the case of Leticia Smith, a woman on the run from a terrible crime with nothing to lose.
When an unthinkably violent criminal flees before his trial, John Walsh joins local authorities on the chase for Michael Waguespack; Cal uncovers hidden and painful truths in a Christmas Eve tragedy that sent police hunting for Miguel Angel Martinez.
When a cunning sexual predator is found hiding in plain sight, John helps police in the pursuit of dangerous James Meece; after a vicious home invasion, Cal goes into the field to help police find the savage James Watts.
When an insidious sexual predator is discovered hiding in plain sight, John helps police in the pursuit of James Meece; after a brutal home invasion, Cal goes into the field to help police track down James Watts.
John joins the hunt for prominent community members Torin and Rena Smith, who absconded from justice after being accused of shocking crimes; Cal pulls back the curtain on Carnell Spencer Lee Jr., a vicious criminal with a dark and menacing past.
A family feud escalates to violence and John joins police in pursuit of one of the FBI's Top 10 Most Wanted fugitives, Eugene Palmer; Cal helps authorities track down Tamera Williams.
John works with investigators to bring Frank Contreras into custody after he commits a terrible crime witnessed by a child; Cal takes on a heartbreaking case where authorities desperately need the public's help to identify a vicious criminal.