So...abduction......
Assumptions......
Perp must know area, presumably well enough to be on foot in the middle of the night.
Perp must know who's in the house and where in the house they are.
Perp must know that "adult" in the house sleeps like the dead.
Perp must know the layout of the house.
Perp must know how to get in previously locked door with no sign of forced entry, no noise, or must have known the door was UNLOCKED.
Perp must have known where to find cinderblock(in the dark), because I do not believe "he" brought it with him. A cinderblock, come on?!
Perp must have known that he needed to prop this door open with this cinderblock whether it was to keep it open, keep it from making noise, etc.
Perp must have been able to get to the house, get in the house, get through the house, get to the bed, grab the child, go back through the house, get out the door..and be gone...
All without making a sound....and no one sleeping in the same room moved?