In Pursuit with John Walsh: Letters from a Predator (S3EP4 Investigation Discovery Wed 8 Sep 2021)

Letters from a Predator: A woman’s murder leads police to suspect her husband and former prison pen pal, William Plemons, who’s been on the run since 2003; Callahan Walsh joins the hunt for suspected murderer and arsonist, Darryl Walker, in Georgia.

Hosted by John Walsh.

Airdate: Wed 8 Sep 2021 at 22:00 on Investigation Discovery

Season 3 Episode 4

Each week, John Walsh leads viewers through unsolved violent crimes that urgently need to be closed – where time is of the essence and harnessing the power of ID’s active and engaged audience could bring these criminals to justice. Joining John in every episode is his son, Callahan Walsh, who leads the operation on the ground, working in tandem with the community and local authorities to search for persons-of-interest. In partnership with the National Center for Missing & Exploited Children (NCMEC), In Pursuit with John Walsh will also feature two missing children each hour, providing age-progression photos and descriptions in the hopes that viewers can provide new leads to their whereabouts.