Nothing Sudden About It - S4-E3
Other mistake: The agent reaches into a toilet tank to retrieve a wristband. He holds the wristband up to look at it, and his hand isn't wet. (00:25:47)
FBI: International (2021)
1 other mistake in season 4 - chronological order
Starring: Luke Kleintank, Heida Reed, Carter Redwood
Visible crew/equipment: After Raines shares details with Kellett about Semien's crew, when it cuts to Semien waking everyone up, just as he announces his contact with Belgian Federal Police, there's a visible T-mark taped to the floor behind Andre's cot. (00:24:25)