Checkmate

Dance of Death (1x29)

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Ballerina Janine Caree calls Checkmate, ostensibly for protection from a shadowy man with underworld connections who at first appears to be an obsessed fan. Don and Dr. Hyatt, however, have to leave for Seattle, so they refer her to a trusted friend and colleague. When the colleague and the shadowy man turn up dead, they are led on a trail of intrigue and murder that leads right where it began.