Getting into the details of filming the fire scene, Ventimiglia said rescuing his TV family from their burning house was actually frightening.
"... I opened the door, and it's just this wall of fire," he said of the scene where he saves Kate. "It was real fire. It was terrifying."
On a lighter note, the actor shared that Jack isn't going anywhere. "I am still around. Jack is still around," he said. "I mean I've been dead since the beginning, so it's kind of like this is just the story of how I died."
Watch the clip here.