| DOOMEDPLANET | The -, tenth and final volume of science fiction novel series Mission Earth by L Ron Hubbard |
| RETURN | The final volume of J. R. R. Tolkien's The Lord Of The Rings, The _ Of The King (6) |
| BIRCHBARK | The ___ House 1999 realistic fiction novel series written by Louise Erdrich |
| KAPPA | 10th and final letter in Greek? |
| DEKALOGY | Word, in reference to a name for the Ten Commandments, for a group of 10 related novels, such as L Ron Hubbard's Mission Earth series (8) |
| LRON | "Mission Earth" series author Hubbard |
| BATTLEFIELDEARTH | 1982 science fiction novel by L Ron Hubbard, founder of the Church of Scientology (11,5) |
| DIANETICS | Set of pseudoscientific ideas and practices invented by L Ron Hubbard and practised by followers of Scientology |
| WELLS | One of England's smallest cities; or, the author of science-fiction novels including The Time Machine, The Invisible Man and The War of the Worlds (5) |
| SCIENTOLOGY | Religion founded by L Ron Hubbard - its followers include John Travolta and Tom Cruise |
| NOAH | The tenth and last of the antediluvian Patriarchs in the Old Testament |
| TENNANT | David _, played both the 10th and the 14th incarnations of the hero of Doctor Who (7) |
| DICK | Philip K ___, author of science fiction novels The Man in the High Castle and The Game-Players of Ti |
| ERATOSTHENES | Greek mathematician and astronomer who calculated the circumference of the earth by observing the angle of the sun's rays (12) |
| SCIENTOLOGIST | Member of a movement inaugurated by L. Ron Hubbard (13) |
| VACLAVHAVEL | Czech playwright, essayist, dissident and politician who was the tenth and last President of Czechoslovakia |
| DAVIDTENNANT | He played the 10th and 14th incarnations of the Doctor in Doctor Who (5,7) |
| WYNDHAM | John ___, English author of science fiction novels; The Day of the Triffids (1951) |
| CLARKE | Arthur C ?, author of science fiction novels The Sands of Mars and Prelude to Space |
| VAGUS | Tenth and longest of the cranial nerves, supplying the heart, lungs and upper digestive tract (5) |
