The series is based on the 2019 novel The Better Sister by Alafair Burke, adapted for television by Olivia Milch and Regina Corrado.

Author Alafair Burke served as a consultant on the series, helping ensure the adaptation stayed true to her original novel.

Elizabeth Banks and Jessica Biel not only star in the series but also serve as executive producers through their own production companies, Brownstone Productions and Iron Ocean Films respectively.

Craig Gillespie directed the series while also serving as an executive producer alongside Annie Marter through Fortunate Jack Productions.

The series is a co-production between Tomorrow Studios and Amazon MGM Studios, with Marty Adelstein, Becky Clements, and Alissa Bachner of Tomorrow Studios among the executive producers.

Corey Stoll, Maxwell Acee Donovan, Gabriel Sloyer, Kim Dickens, and Bobby Naderi all joined the cast in June 2024.

Filming took place in New York, beginning in June 2024 and wrapping in October 2024.

All eight episodes of the limited series were released at once on Amazon Prime Video on May 29, 2025.

The show received a 70% approval rating on Rotten Tomatoes based on 33 critic reviews, with critics praising the pairing of Elizabeth Banks and Jessica Biel despite finding the mystery derivative.