From The Moving Picture World notice:
  . . . Cassie finds life with Legree unbearable, and hates him with an indescribable intensity. She plans to accomplish escape for herself and Emmeline, and asks Uncle Tom to go with them, but he refuses to leave while others suffer for no more reason than himself. Cassie plays upon Legree's superstition and fear, for, in reality, he is an arrant coward, and she makes him believe there are ghosts in the garret of his house, and when she and Emmeline take flight and he pursues them with bloodhounds and slaves, the women retrace their steps, after passing through the swamp to throw the dogs off the trail, and return to the garret, where they remain for three days and make good their escape when favorable opportunity presents itself after Legree has given them up for gone.
  Legree, filled with rage, for want of better excuse accuses Uncle Tom of knowing something about Cassie's escape and being party to it. . . .