Final answer:
Henry was expecting that his parents would be very mad at him when he went home.
Step-by-step explanation:
Henry was expecting that his parents would be very mad at him when he went home. This expectation is based on the context provided in the passage, where Henry and his companions were taken out of jail and brought back home while the narrator was left alone. The narrator speculates that his parents might be angry with him for being the cause of the others' intention to run away. However, it is important to note that the passage does not directly state how Henry's parents actually reacted when he went home.