Sylvester Stallone’s Balboa Productions Teaming With ‘The Walking Dead’ Vet Channing Powell On Series Adaptation Of J.D. Barker’s Serial Killer Thriller Book Series ‘4MK’

A '4MK' TV series, based on the J.D. Barker books, is in the works from Sylvester Stallone's Balboa and 'The Walking Dead' vet Channing Powell.