Plot hole: When the security guards enter the cage housing the blown safe there are no traces of the water used to break the safe - not even on the (dry) floor. This happens only minutes after the explosion sent the safe door and gallons of water across the cage.
The Score (2001)
1 plot hole - chronological order
Directed by: Frank Oz
Starring: Robert De Niro, Edward Norton, Angela Bassett, Marlon Brando
Plot hole: When the security guards enter the cage housing the blown safe there are no traces of the water used to break the safe - not even on the (dry) floor. This happens only minutes after the explosion sent the safe door and gallons of water across the cage.
Trivia: Most of the conversations between Robert De Niro and Marlon Brando are improvised.
Answer: He didn't know for a fact that it would happen, but he was experienced enough in these kind of high-stakes operations to plan for literally every contingency, including a double-cross.