EXCLUSIVE: Alicia Silverstone and Tim Heidecker are the latest to join Lizard Music, Benny Safdie’s live-action/CGI hybrid adaptation of the novel by Daniel Pinkwater.

Character details are under wraps. Earlier this week, we announced that 10-year-old Theo Clark Leber had landed the lead role opposite Dwayne Johnson, who’s also producing.

Safdie adapted the screenplay for Lizard Music, which follows a boy (Leber) left to his own devices who stumbles upon a secret late-night broadcast of lizards playing otherworldly music, a hidden door to the extraordinary swings open. His search for answers leads him to an eccentric and whimsical old man nicknamed The Chicken Man (Johnson), and his beloved companion, a 111-year-old chicken named Claudia – two kindred spirits who found each other at just the right time. United by this shared vision, they set off on an adventure that begins as a hunt for a hidden society but blossoms into something far greater: a voyage through invisible worlds, unexpected harmonies, and the unbreakable bond between lost souls who discover magic not only in what they find, but in each other.

Producers include UA’s Scott Stuber and Nick Nesbitt, Safdie for Out for the Count Productions, Johnson for Seven Bucks Productions, and Magnetic Fields Entertainment’s David Koplan.

An Emmy and Golden Globe nominee, Silverstone is coming off projects like Yorgos Lanthimos’ Academy Award-nominated Bugonia, the chart-topping Netflix film A Merry Little Ex-Mas, which she also exec produced, and the erotic thriller Pretty Thing with Karl Glusman. She is repped by UTA, Untitled, and Gang, Tyre, Ramer.

Recently taking over Alex Jones’ Infowars alongside The Onion and reconceiving it as a parody site, Heidecker stars opposite Gregg Turkington in the web series On Cinema. He’s also recently been seen starring alongside Marlon Wayans and Tyriq Withers in the horror film Him and is repped by UTA.