The lead actress of the movie Inheritance had to commit a real as part of her role. Everything was scripted, but the crew had a backup plan in case it failed.
In an exclusive interview with Collider, director Neil Burger shared the risks they took to ensure the authenticity of the film. One of the extremes involved having actress Phoebe Dynevor steal a pair of sunglasses from a store as part of her role. It turns out Dynevor underwent professional training on how to steal without getting caught, with the director himself guiding her. And in case it went wrong, they had a backup plan in place.
“Well, we were ready for that. And she does it expertly because I trained her on how she wasn't just going to grab it and run. She had a very deliberate way of doing it, and she just seemed like a customer who didn't draw any attention to her. There's this methodology that I came up with in my devious mind to do it.”

Burger added that carefully selected the store, picked out the exact pair of sunglasses she was meant to steal, and even bought the same pair at a Fifth Avenue store.
“We had a receipt, had an excuse, had all sorts of contingencies and explanations for if she got caught, but in fact, she walked away with it. Then we just quietly put it back, and they never knew the difference.”