Due South (1994)

S2E2 Vault

While a bank heist unfolds, Fraser and Ray find themselves stuck in a time-locked vault that’s filling with water. Following a mishap involving an insurance company that leads to Ray being pronounced dead, the duo heads to Ray's bank, only to stumble into another robbery where they encounter an old acquaintance, Morgan. They quickly lock themselves inside the vault, and Fraser activates the sprinkler system, aiming to drench the robbers with a deluge. Outside, Frannie waits in Ray's car but ends up entering the bank, inadvertently becoming a hostage in the chaos.