Here are the "investigations" we've been treated to so far during the May sweeps. We'll update it as warranted. If there's one we've missed, drop us an email.May 1: KETV, Carol Kloss, Real Estate Agents and Home InspectorsWOWT, Brian Mastre, Teen Driving DangersKPTM, Dave Hansen, Cold Case Files (ongoing)May 2: KPTM, Hansen, Meth-Related Health Care in PrisonMay 3: WOWT, Tracy Madden, Meth