Casey Leach can be seen as Nico in "Pam & Tommy" on Hulu, Danny Spagnolo on the CBS staple "NCIS", and as Charlie in the Netflix psychological thriller "Secret Obsession" starring Brenda Song, Mike Vogel, and Dennis Haysbert. The joint venture of Hybrid and Netflix, "Secret Obsession" shot to Netflix's #1 spot after premiering to over 40 million households. Leach portrays Charlie, the Deputy opposite Dennis Haysbert, investigating the mysterious circumstances surrounding a local accident.

Leach also starred as Corey Haim in Lifetime's "A Tale of Two Coreys" which follows the lives of young stars Corey Feldman and Corey Haim, caught up in the celebrity party culture of the 80's. Leach portrays the adult Corey Haim, who passed away in 2010. Leach has also appeared in SyFy's "Cucuy: The Boogeyman" and Lifetime's "The Perfect Mother". In addition to TV and Film, Leach also voices Evan in the critically acclaimed video game "Life is Strange: Before the Storm" and has appeared in numerous national and regional commercials.