Murderous Love(1973)

A 300 year old witch agrees to assassinate a dead-sick businessman and his ignorant sexy wife upon the former’s own request – the kills are to take place in separate locations at the same time. The granny then exits the same way she entered his office, with rope via 20th floor window! And it gets even better when you realize the granny is played by Sonny Chiba. Chiba soon takes his own handsome form and retreats to plan the hits with his karate killer sister...