Answer: ASSASSINS

AnswerCrossword Clue
ASSASSINSSondheim musical with a quintet
ASSASSINS"Killer" musical by Sondheim
ASSASSINSHitmen
ASSASSINSNinjas, perhaps
ASSASSINSMusical that includes "The Ballad of Booth"
ASSASSINSPrincip, Zangara, Collazo.
ASSASSINS1991 Sondheim show
ASSASSINSSome mercenaries
ASSASSINSHit men
assassinsA member of the Nizari branch of Ismaili Muslims at the time of the Crusades, when the newly established sect ruled part of northern Persia (1094รป1256). They were renowned as militant fanatics, and were popularly reputed to use hashish before going on murder missions
assassinsASSASSIN, a murderer (one who murders (to kill unlawfully with premeditated malice))
assassinsA murderer of an important person in a surprise attack for political or religious reasons