 Álex collapses and claims he needs an ambulance.Peña tells him about the car accident that killed his wife and that she was actually murdered, as her life could have been saved if the other driver had called for help instead of fleeing the scene; Peña and his 10-year-old daughter, Eva, watched helplessly as Ruth died an hour later.He then tells Álex that only recently Eva had remembered the logo on a keychain hanging from the other car's rearview mirror