Adams considered writing a third radio series to be based on his novel "Life, the Universe and Everything" in 1993, but the project did not begin until after his death in 2001. Dirk Maggs, with whom Adams had discussed the new series, directed and co-produced the radio adaptation as well as adaptations of the remaining "Hitchhiker's Guide" novels "So Long, and Thanks for All the Fish" and "Mostly Harmless". These became the third, fourth and fifth radio series, transmitted in 2004 and 2005. A sixth series, adapting Eoin Colfer's sixth part in the "trilogy", "And Another Thing..." was broadcast in March 2018.