Of all the scenes Keanu Reeves and Rachel Weisz had together, there is one that stands out as the most terrifying for Weisz: the scene in which Constantine drowns Angela to re-awaken her powers. It’s subtle at first. We watch as Angela is submerged under water, with a close-up shot of her face. It isn’t until she needs to breathe that the panic starts to heighten. Quick shots back and forth between Constantine’s face through the water and Angela’s heightening fear and increased flailing ramp up tension further, creating an intense viewing experience.

The fear we see onscreen is genuine, which makes sense considering what they had to do to get the shots. As Weisz shared with Tribune, the line between acting and reality collided in the shooting of this scene:

“It was scary, it was really scary. Keanu was holding me down by the neck, I was thrashing about in the bath, and I guess there’s a moment where you’re not acting anymore. You’re thinking, ‘I really gotta get out of this bath, otherwise I’m going to die.'”

The two did have a signal in case things got out of hand but, as Weisz shared, the signal had a flaw: how would they be able to differentiate between the three taps they had agreed upon versus her panicked thrashing? Fortunately, the two were in tune with each other enough for Weisz to trust that Reeves would know enough was enough.