If gouhls and monsters keep you awake at night, than insidious is not the movie for you. However, if you love creepy horror-sci-fi flicks than insidious is perfect for you. It has a perfect balance between weird and scary, with the main plot being about a boy who can travel between our world and the spirt world. When he gets trapped in a sort of limbo, called The Further, only his father can save him. The 'gohsts' in this movie are a perfect blend of scary and realistic and one things for sure the cliffhanger at the end will keep you awake for weeks at night, thinking, When I sleep, do I travel between worlds?