Doctor Foster - Season 1, Episode 3: Soundtracks

Beginning of episode 3 while driving her car

THE SONG IS ACTUALLY: Remember (Walkin' In The Sand) by The Shangri-Las. When Gemma is putting on lipstick to go to her "Local Medical Committee dinner".

Gemma walks out of the house, scratches her husband's car with the keys; Carly offers Kate a second copy of a pregnancy book which she "ordered by mistake".

Midway through Episode 3, when Gemma reads through Simon's texts.