It took a long time for Clara's father to process the words . So Clara's phone hadn't just been turned off . She was actually … gone . Ethan grabbed Martinez's arm . " Officer , was my sister murdered? Did you catch the killer ? " Martinez shook his head . " The report says it was late - stage brain cancer . Her lawyer didn't say much , only that she would be notifying the family in a few days . Then you all showed up . " Brain cancer ?! The word exploded in the father's mind . Brain cancer … He suddenly remembered the question Clara had calmly asked the day she disappeared : " If it were me who was dying … would you even care ? " Oh God … so his daughter was already gravely ill back then ? But why hadn't he noticed ? What had he said to her ? " Look at you , you're perfectly healthy - you've got great color in your cheeks . " The father sank into his chair , a wave of despair slowly consuming him . How hopeless must his daughter have felt ? To face the end of her life completely alone , without the people closest to her . How lonely she must have been . After a moment , he stood up , trembling , and looked at Martinez . " Can we find that lawyer ? I need to contact them . " " We don't have that information . But the lawyer did mention they would be in touch in about three days . " Numbly , as if on autopilot , Zane moved through the rest of the station's formalities .