'Partner is crime' could be a pun of 'partner in crime' if it was used in context of whatever else is being said. Standing alone, 'partner is crime' is not a pun because it's not clear what the intent is for saying it.
Hare
Partner in Crime
N. In order to be liable for a crime, an individual partner must somehow have agreed to or have participated in the crime.
an individual can not be held liable for crimes committed by their partner, as long as there was no agreement to commit the crime, or participation in the crime on the individuals behalf
N. In order to be liable for a crime, an individual partner must somehow have agreed to or have participated in the crime.
They are called accomplice.
JMS's partner in crime
No
tu es mon partenaire dans le crime
well it is beyonce knowles
buddy pal partner in crime amigo