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The Rockford Files opens its fourth season as detective Jim Rockford (James Garner) returns from a vacation in Puerto Rico, only discover that someone has stolen his clothes, his car, his trailer. . .and his identity. Nerdy garage mechanic Fred Beamer (James Whitmore Jr.) has always dreamed of becoming a private eye, and has taken advantage of Jim's absence by making his dream come true. Posing as Jim, Fred has accepted some rather dangerous cases, including one from a gentleman with homicidal tendencies named Manny Arturis (Roger Loggia). Now the REAL Rockford is stuck with the duel task of rescuing Fred and saving himself from the consequences of Fred's whimsical behavior. This episode marks the second Rockford Files reteaming of James Garner with his former Maverick costar Jack Kelly, who may or may not be the villain of the piece.