Impossible Incorporated

Time travel, other worlds, new dimensions, parallel universes: the Impossible Incorporated team can journey any place the mind can imagine--and also into mysteries far beyond imagination's reach. But the greatest mystery of all is--what happened to Goliath Horowitz? Number's father vanished when she was seven years old and she's determined to discover the truth about Goliath's disappearance, find him, and bring him home.