Watch Criminal Minds Beyond Borders premiere live online: David Rossi guest stars in the spin-off series

Criminal Minds Beyond Borders is a spin-off of the hit CBS hit series Criminal Minds. The show focuses on the specialised international division of the FBI tasked with solving crimes and coming to the rescue of Americans who find themselves in danger while abroad.

As 20-year veteran of the bureau, Jack Garrett leads the International Response Team (IRT). His team members include Clara Seger, a smart and multi-lingual cultural anthropologist; Matthew Simmons, a former military hero with split-second profiling skills he honed on the battlefield; Russ "Monty" Montgomery, the unit's compassionate, brilliant tech analyst; and Mae Jarvis, the team's medical examiner.

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The premiere episode is titled The Harmful One, which will air this Wednesday (16 March) at 10pm EST on CBS Network. The official synopsis reads as follows:

Unit Chief Jack Garrett (Gary Sinise) and his International Response Team (IRT) travel to Thailand when three American volunteers go missing during a trek to Bangkok, and reconnect with former colleague Clara Seger (Alana De La Garza), who helps them rush to gather evidence leading to the UnSub before a storm threatens to wash it away.

Criminal Mind's star Joe Mantegna, who plays David Rossi, will guest star in the spin-off series. Rossi is a supervisory special agent of the FBI's Behavioral Analysis Unit (BAU) in Criminal minds and he will help IRT solve a case.

Creator and executive producer Erica Messer said fans would love the new group as much as the original heroes in Criminal Minds. She told TVGuide: "This is a great group. They're a group that feels like they've been working together a long time, which is lovely."

"Like our original heroes, you get a really wonderful, they're-all-in-this-together vibe from them. There are obviously similarities [between the two teams] but these guys are they're own people, and I think everyone's going to enjoy getting to know them," she said.