Rotten (2021)

Daan still regularly has nightmares about his dead domineering father and bears the scars from his belt on his body. But shortly after the birth of his own son, Daan starts to literally see his father in ghostly apparitions surrounding a patch of mold on the wall in the baby's room. Daan tries everything to remove the mold, but it keeps returning and growing - just like the manifestations of his dead father. As Daan's paranoid behavior worsens and interferes with the care for his infant son, his relationship with his girlfriend Zoey starts to suffer. Daan realizes he can no longer keep running away from his past and must finally confront his father.