Cannon

The Seventh Grave

One step forward, two steps back as Cannon hunts a mass murderer. Helping to cloud the facts: a police lab technician who's altering the evidence as quickly as it is found.
Aired: Feb 28, 1973 Genre: Drama Action & AdventureCasts: William ConradCreated By: Edward HumeProducers: John BadhamDuration: 1h Rating: 0 Country: United States of America Production: Quinn Martin Productions (QM)