this film be about john sullivan who can communicate to his dad and frank sullivan and 30 year in the past . have manage to save his dad life and the two must fix all the bad thing that have result from the saving of frank . this be a good sci fi thriller that be like a father and son movie . dennis quaid and james caviezel performance be great and include others . i like how the time effect use in this film in which two people in two different time period ( remind me of the lake house ) and change thing in the past which change the present and create more problem . this film have mystery and action and thrill and and emotion between the father and son . it have great performance and be a good sci fi thriller . if you like these kind of film and watch it .