you have to take the bull by the horns and damn the consequences.i wont tell u to lie to him about your whereabouts. dont tell him you wont come to work so and so day. just absent yourself and when you resume tell him you were unavoidably absent so that you can attend to urgent pressing issues.he cant kill you.he will only cry shout and threaten you,thats all.you must arise and shine.best of luck.