A group of flamboyant Italian acrobats pay a visit to the Ponderosa. Despite his long friendship with Guido Borelli (Cesar Romero), leader of the acrobats, Ben Cartwright is disturbed over Borelli's exhibitions of jealousy whenever his sweetheart Pitina (Ilze Taurins) shows interest in another man-such as Ben's son Joe. When Borelli's younger rival Carlo (Fabrizio Mioni) is stabbed, Guido tries to frame Joe for the act. Lily Valenty rounds out the guest cast as Donna Luisa. Written by Jo Pagano, "The Deadliest Game" was originally shown on February 21, 1965. ~ Hal Erickson, Rovi