That same year, Barry invested the majority of his original scripting budget into a six-part science-fiction serial written by Kneale and directed by Rudolph Cartier, an Austrian-born director who was establishing a reputation as the television service's most inventive practitioner. Entitled "The Quatermass Experiment", the serial (miniseries in American terminology) was a huge success and went a long way towards popularising the form, where one story is told over a short number of episodes, on British television: it is still one of the most popular drama formats in the medium to this day. Kneale and Cartier went on to be responsible for two sequel serials and many other highly successful and popular productions over the course of the decade, drawing many viewers to their programmes with their characteristic blend of horror and allegorical science fiction.