The Chum Returns is the fourth episode of the Absorbent Days series and the fourth episode of season one. When a friend of Patrick, Lewis, returns to catch up on missed days, SpongeBob becomes suspicious about him. Patrick claims SpongeBob is just acting jealous, yet SpongeBob knows something is wrong with Lewis. SpongeBob begins to spy on Lewis, only to see Lewis making a trade off with Plankton. SpongeBob tries to gather more clues on to get caught and placed in a cell. In an activity, Patrick learns a little more about the real Lewis. Lewis claims Patrick knows too much and locks him in the same cell as SpongeBob. Can the two escape? This episode is paired with A Blast from the Cast.