What is “Prisoner on Hell Planet”? How is it similar to Maus? How does it differ?

As Art visits his father more and more, their relationship begins to change. In previous chapters, most of their communications focused around Vladek's retelling of his Holocaust experiences. Lately, though, their conversations have been getting more personal. At the beginning of Chapter 6, Vladek begins to complain again about his relationship with Mala, and Art suggests that they see a marriage counselor. This kind of honest assessment and advice has been uncharacteristic to date, and seems to be a sign that Art's frequent visits are leading to a more positive and open relationship.