Eu não vi o filme. Mas a sinopse no IMDB diz que o pai (Abraham) reaparece no final do filme:
Max wakes up in Jimmy's barber shop. Jimmy offers him some water and a pickle, stating that pickles help with the transition from one body to another. Max asks how he knew about that. Jimmy takes off his shoes to reveal that he was Abraham the whole time. Both elated and angry, Max hugs his dad.
Parece que ele não estava morto ou desaparecido. Ele estava apenas disfarçado.