 Each series consists of a box set of 4 hour-long plays.Between the fourth and fifth series, the duo travelled with the Doctor (Colin Baker) for a pair of adventures, "Voyage to Venus" and "Voyage to the New World", as single-disc releases.Additionally, a pair of Short Trips were released in March & April 2017 called "The Jago & Lightfoot Revival" (featuring the Tenth and Eleventh Doctors); while they also reunited with the Fourth Doctor for "The Justice of Jalxar, The Beast of Kravenos" and the Sixth Doctor in "".