"If he comes up with a story and if he wants to go forward and do another one, Steven (Spielberg) says he's completely on board and wants to do it. I certainly would want to do it, and I know Harrison (Ford) would love to do it. We just have to wait for George to get his act together." Actress Karen Allen reveals the leading men behind the Indiana Jones franchise are waiting for George Lucas to come up with a new script for a fifth film.