cop

patrolman, policewoman

detective, inspector, investigator, plainclothesman, sherlock, sleuth

marshal (also marshall), sheriff, trooper

peace officer

captain, lieutenant, sergeant

constabulary, heat [slang], police, police force

operative, private detective, private eye, private investigator

glove, halter, lasso, rope

apprehend, arrest, detain

bay, corner

clasp, clutch, fasten (on), fist, grasp, grip, hold, latch (on or onto), secure

rend, wrest

enmesh (also immesh), ensnare, entangle, entrap, mesh

abduct, kidnap, spirit (away or off)