Got into bed with a criminal (8)
I believe the answer is:
obtained
'got' is the definition.
(obtaining is a kind of getting)
'into bed with a criminal' is the wordplay.
'with' is a charade indicator (letters next to each other).
'criminal' indicates an anagram.
'into'+'bed'='intobed'
'intobed' after 'a' is 'aintobed'.
'aintobed' is an anagram of 'OBTAINED'.
(Other definitions for obtained that I've seen before include "Got, procured" , "Into a bed (anag.)" , "Came into possession of" , "Acquired" , "Got something" .)