‘Hart to Hart’ Joins Hallmark Movies & Mysteries Lineup; Network to Air ‘Diagnosis Murder’ and ‘Murder, She Wrote’ Marathons
To kick off 2015 in style, Hallmark Movies & Mysteries will air all-day marathons of several programs during the month of January including "Hart to Hart," "Diagnosis Murder" and "Murder, She Wrote." The network will also air marathons of its popular original mystery movies, including Kellie Martin's "Mystery Woman" series.