Perry Mason - Season 5 Episode 30
The Case of the Lonely Eloper

Merle Telford is a naive and maladjusted young woman who is about to turn 21 and receive a substantial inheritance. She plans to run away from her guardians and elope with Danny Pierce as soon as she receives her money. Yep, you guessed it already, Danny is a greedy schemer and Merles supposed friend, Gina Gilbert, is his accomplice. Merles guardians know of her plans and hire Paul Drake to keep Merle from fleeing on the night of her 21st birthday party. When a murder is committed during the party Merle becomes the prime suspect.