Born in New York City; educated at The State University of Pennsylvania, State College, PA (1931). Under contract with Warner Bros. for over 17 years, during which time, often in collaboration with twin brother Philip G. Epstein, he wrote several outstanding films including the much-lauded CASABLANCA (1942) and THE BROTHERS KARAMAZOV (1958). Julius concentrated on writing solo screenplays from 1955. Other notable screen credits include THE STRAWBERRY BLONDE (1941), THE MAN WHO CAME TO DINNER and THE MALE ANIMAL (both 1942), the WHY WE FIGHT series (1943-45), MR. SKEFFINGTON (also producer) and ARSENIC AND OLD LACE (both 1944), ROMANCE ON THE HIGH SEAS (1948), MY FOOLISH HEART (1949), THE LAST TIME I SAW PARIS (1954), YOUNG AT HEART and THE TENDER TRAP (both 1955), KISS THEM FOR ME (1957), THE RELUCTANT DEBUTANTE (1958), TAKE A GIANT STEP (1959, also producer), FANNY (1961), SEND ME NO FLOWERS (1964), ANY WEDNESDAY (1966, play, also producer), JACQUELINE SUSANN'S ONCE IS NOT ENOUGH (1975), CROSS OF IRON (1977) and HOUSE CALLS (1978). He also produced PETE 'N' TILLIE (1972) and REUBEN, REUBEN (1983). The Epsteins are the first of only three sets of twins to win Oscars. His son is novelist Leslie Epstein.  Nominated for Writing (Screenplay) 1938: FOUR DAUGHTERS (w. Lenore Coffee)  Writing (Screenplay) 1943: CASABLANCA (w. Philip G. Epstein & Howard Koch)  Nominated for Writing (Best Screenplay based on material from another medium) 1972: PETE 'N' TILLIE  Nominated for Writing (Best Screenplay based on material from another medium) 1983: REUBEN, REUBEN 4 nominations, 1 Award