Perry's sister saw his addiction as terminal in 2018

Mia Perry Bowick, Matthew Perry's half-sister and psychotherapist, speaks on camera for the first time in Netflix's three-part documentary 'The One About Matthew Perry', premiering Tuesday. She reveals she began viewing his addiction as a terminal illness in 2018 after his colon ruptured due to opioid misuse. She also says the family felt 'duped' by his personal assistant.