Zaillian will write and direct all eight episodes of the first season, according to The Hollywood Reporter.
Zaillian will write and direct the whole first season of Ripley, which follows the titular character from 1960s NY to Italy after he's employed by a rich man to retrieve his vagabond son and return him to America.
The program will be embeded in the 1960s.
The character was previously played by Matt Damon in the 1999 movie The Talented Mr. Ripley, though sources stress that Showtime's Ripley series is a wholly original endeavor based on Highsmith's books rather than a remake or reboot of the Ripley feature films, which also include 1960's Purple Noon starring Alain Delon, 1977's The American Friend starring Dennis Hopper, 2002's Ripley's Game starring John Malkovich, and 2005's Ripley Under Ground starring Barry Pepper.
Scott will star in Ripley, a TV adaptation of Patricia Highsmith's acclaimed Tom Ripley crime novels, Showtime network said Wednesday.
We know he can be a tricksy criminal sort thanks to his work on Sherlock, and Andrew Scott's profile has only grown via Fleabag's "hot priest" and his appearance in the likes of Black Mirror and Spectre.
Sharon Levy will oversee the series, which will be executive produced by Zaillian, Garrett Basch, Philipp Keel, Guymon Casady and Ben Forkner.
After accepting the job, his European voyage spirals into a complex life of lies, deceit and murder.
The role seems unlikely to build on Scott's romantic appeal.
On Tuesday, Amazon announced a major new content-producing deal with Waller-Bridge, who also wrote Fleabag, reportedly worth US$20 million (RM83.9 million) per year over three years. You might remember the film adaptation from director Anthony Minghella.