In a Heartbeat is a drama television series inspired by real life EMT squads whose staff consists of high school students in Darien, Connecticut. The series follows the lives of several teenagers who volunteer as part-time EMTs while going to school and trying to maintain their lives as normal teenagers. In Canada, the series was aired on Family Channel while in the United States it was aired on the Disney Channel. The series is fact-based, as there are teenage volunteer EMTs in service all across the United States.

Shawn Robert Ashmore is a Canadian actor. He is known for his roles as Bobby Drake / Iceman in the X-Men film series, Jake in the television series Animorphs, Agent Mike Weston in the television drama series The Following, Eric in the horror film The Ruins, Sam Spencer in the ABC series Conviction, Wesley Evers in the ABC series The Rookie, and Lamplighter in the Amazon Prime Video superhero series The Boys. Ashmore also plays the main character, Jack Joyce, in the 2016 video game Quantum Break, as well as Conrad in 2019's Man of Medan. He is the identical twin brother of actor Aaron Ashmore.