Emma Watson as Dr. Carol Smith

She is a junior doctor working under Dr. Arjun. She very mature person. She has a crush on her co-worker cum childhood best friend Dr. Tom Jones. She not only acts be Komal's best friend rather she becomes her best friend within very short span of time.

Jeremy Irvine as Dr. Tom Jones

He is a junior doctor working under Dr. Arjun. He is a bit immature. His childhood best friend is Dr. Carol. He is unaware about her feelings towards him. He has got a crush on Komal/Anisha when he first saw her.

Parineeti Chopra as Namrata Kapoor. She is the childhood best friend of Dr. Arjun and Kabir. She is Dr. Arjun's girlfriend. She is an Investment Banker.

Alia Bhatt as Simran Kapoor. She is the Namrata's younger sister. She loves her sister very much. She becomes a very good friend of Komal/Anisha after meeting her. She has a huge crush on her sister's best friend, Kabir. She is a fashion designer. She is a cricket freak girl. She is an India supporter, always despite of being a British citizen.

Hey people keep supporting, commenting and voting! Will Komal/Anisha remember anything?  Well we will come to know in the upcoming chapters.