Collocations for detective - noun

private
She hired a private detective to follow her husband.

undercover
store
The store detective was keeping a close eye on a suspected shoplifter.

police
amateur
fictional
Sherlock Holmes was Conan Doyle's fictional detective.

homicide (AmE)
hard-boiled
lead (AmE)
Thomson was the lead detective in the Ramsay case.

hire

investigate sth
detectives investigating the case

agency
work
We are going to have to do some detective work on this.

fiction, novel, series, show (esp. AmE), story
hero