Diagnosis Murder/Food Fight
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Food Fight is the twenty-third episode of the fifth season of Diagnosis Murder, and the one hundred eighth episode overall.
Mark must get to the bottom of things when competition between caterers for the annual hospital fundraiser's ball turns deadly.
Oddly, this episode is DM's tribute to Happy Days and its spinoff series, featuring Erin Moran (Joanie Cunningham), Pat Morita (Arnold, the diner owner) and Donny Most (Ralph Malph), as well as Leslie Easterbrook and David L. Lander (Rhonda and Squiggy, respectively, from Laverne and Shirley) and Conrad Janis (Mindy's dad from Mork and Mindy).