Season 1

Season One of One True Life aired on

Main Cast

 * Nina Dobrev as Alexandra Fowler
 * Candice Accola as Hayley Evans
 * Paul Wesley as Lucas Cooper
 * Ian Somerhalder as Mason Cooper
 * Leighton Meester as Sasha Martinez
 * Sophia Bush as Sara Fowler
 * Blake Lively as Spencer Langley
 * Penn Badgley as Owen Bennett
 * Lucy Hale as Mary Parker

Recurring Cast

 * Taissa Farmiga as Zoe Bennett
 * Sarah Paulson as Andrea Bennett
 * Austin Nichols as Justin Monroe
 * Bethany Joy Lenz as Chloe Johnson
 * Michael Trevino as Tyler Woods