Learn what "finally we can book the bastard" means, when people say it, and how to use it naturally in English.

Here, book means arrest, and bastard is an insult for a hated person.
From Undercovered Heart, Episode 1
A police officer or investigator says they can finally arrest the suspect.
Use this only in criminal or detective contexts; it is slangy and very rude. Learners should understand it, but not use it in polite speech.
Scenes unlock real expressions as you watch
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