- Frank Oz (Bert)
- Sonia Manzano (Maria Figueroa Rodriguez)
- Roscoe Orman (Gordon Robinson)
- Martin P. Robinson (Telly Monster/Aloysius Snuffleupagus/Irvine/Slimey (voice))
- Suki Lopez (Nina)
- Violet Tinnirello (Charlie)
- Jennifer Barnhart (Zoe (voice))
- Ryan Dillon (Elmo (voice))
- Alan Muraoka (Alan)
Sesame Street — S16E122
Episode: Telly the Detective
Air Date: 1985-05-07
Overview
Telly takes on the role of detective and investigates a mystery on Sesame Street. He gathers clues and interviews witnesses to solve the case. His detective work leads him on an entertaining adventure while he learns about observation and logical thinking. Sponsors: E, S, 4