Doctor Doctor Guest cast, played by Zoe Carides Episode 3x09: Episode 9 (Oct 1, 2018) Episode 4x01: Episode 1 (Feb 5, 2020) Episode 4x02: Episode 2 (Feb 12, 2020) Episode 4x03: Episode 3 (Feb 19, 2020) Episode 4x04: Episode 4 (Feb 26, 2020) Episode 4x05: Episode 5 (Mar 4, 2020) Episode 4x06: Episode 6 (Mar 11, 2020)