It's a very risky business, after all.

It seems the casting of Tom Cruise's son, Connor, in the upcoming Will Smith movie Seven Pounds was even a surprise to costar Rosario Dawson—that is, until a certain Hollywood top gun showed up one day.

The actress tells E! News that while the story about Connor's involvement in the flick just went public a few days ago, she's known for quite some time, and recalls how she first found out.

"I think it's actually really funny. During rehearsals, Tom walks in, and I'm like, OK, I guess they're just having a visit," says Dawson.

"And then his son was there, and he's like, 'No, he's actually playing the younger version of Will, and he was there to sign his contracts. It was hilarious. And Tom was just like, 'Yeah, make sure you read the fine
print.' "

That's one lion looking out for his lamb.