In episode six of the IPTES season, Just Science interviews Robert Thompson, a Senior Forensic Science Research Manager at the National Institute for Standards and Technology. Mr. Thompson discusses his research on consecutively manufactured barrels and Objective Comparison of Toolmarks Produced from Consecutively Manufactured Cold Chisels. The profile's similarity and differences were compared using two mathematical methods, cross-correlation function, and the recently developed congruent matching profile segments method.

This season is funded by the National Institute of Justice's Forensic Technology Center of Excellence.