Recap / Portal 2 The Return

Chell continues through the tests while catching the occasional glimse of Wheatley. As she heads to the chamber containing her twelfth test, a door malfunction prevents her from proceeding onwards, while forcing GLaDOS to depart to fix the problem. While she's gone, Wheatley approaches Chell and reveals he had sabotaged the door, before assuring her that he's working on a way to get them both out of the facility. In the meantime, Chell carries on with the tests under GLaDOS's supervision, with GLaDOS eventually telling her test subject that she has a surprise planned for her, implying that it involves her parents...