Popsugar Entertainment Best Of 2021 Books Becoming Films in 2021 31 Book-to-Film Adaptations Scheduled to Hit Cinemas in 2021 13 November 2020 by Sabienna Bowman View On One Page Photo 11 of 31 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 11 Deep Water by Patricia Highsmith What it's about: A couple's open marriage takes a potentially dark turn when the wife's lovers begin to go missing, leaving her husband as the prime suspect. Who's starring: Ana de Armas, Ben Affleck, and Jacob Elordi Read Deep Water. Release date: Aug. 2021 Previous Next Start Slideshow Best Of 2021Books To MoviesMoviesBooks