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Teenage Patty, reluctantly having left the city for a summer in the country with her aunt, has an inauspicious beginning: she's poisoned by arsenic in the well. Her aunt finds the source of the problem in an old mine, but is then trapped when the floor collapses, so Lassie must find Patty, who's just about to leave.
First Air Date : Sep 12, 1954
Last Air date : Mar 24, 1973
Episode : 591 Episode
Season : 19 Season
Runtime: 24 minutes
Studio: CBS
Country: United States of America
Cast: Hugh Reilly, Josh Albee