In the film , The Butterfly Effect , a mother and her baby are accidentally killed in an explosion .
These traumas include being coerced to take part in child pornography by neighbor George Miller ( Eric Stoltz ) ( father of Kayleigh and Tommy ) ; being nearly strangled to death by his institutionalized , mentally estranged father , Jason Treborn ( Callum Keith Rennie ) , who is then killed in front of him by guards ; accidentally killing a mother and her infant daughter while playing with dynamite with his friends ; and seeing his dog being burned alive by Tommy .
The Butterfly Effect