Doug doesn’t like to talk about his past. None of the other detectives know what he was like before he came to SEVEN-O, either. But he does show an obsession with investigating a certain man…
It's something I've learned 
over the past eight years.
.إنّه أمر تعلّمته في السّنوات الثّمانية السّابقة
Etwas, was ich in den letzten
acht Jahren gelernt hab.
Lo aprendí en estos ocho años.
Lo aprendí en estos ocho años.
J’ai appris ça
en huit ans de service.
È una cosa che ho imparato negli ultimi otto anni.
Isso é uma coisa que
aprendi nos últimos 8 anos.
Вот что я понял
за восемь лет службы.