Nancy Drew: Katherine McNamara
Frank Hardy: Richard Harmon

Joe Hardy: Dylan Playfair

Bess Marvin: Abigail Breslin
George Fayne: Brianna Hildebrand
Ned Nickerson: Ansel Elgort

 

 

Mercedes: Victoria Justice

Buck: Alexander Ludwig

Claire: Katherine Langford
Taryn: Rae Gray
Roy: Chris Hemsworth