在经历时间之钥的冒险之后，Romana在塔迪斯内突然重生为下一任化身，Romana ll 选择了Astra公主的形象，在为了逃脱黑守卫的追踪之下，运用随机盘来到了一处荒无人烟的星球上，在这里有一个老朋友正在等着博士的发现；同时在遥远的地球诞生之初，一艘Jagaroth飞船的爆炸将影响千万年之后的地球；Romana将博士的收发器接入塔迪斯，而等待他们的冒险又是什么…神秘博士的第十七季，也许并不如几季大放光芒，但如一瓶沉淀刚好的葡萄酒，质朴醇厚。

Where the Fourth Doctor left off, the Eighth Doctor comes to finish the job. With Romana and K9 by his side, they have to stop the evil Skagra. A remounted version of the abandoned Fourth Doctor serial, rewritten to feature the Eighth Doctor and fit in with the Big Finish audio drama continuity.

A young, English, ne'er-do-well who goes to stay with his sister and her wealthy fiancé/benefactor in 1930's Germany, just before the rise of the Nazi party.

television series

Man of leisure Sir Richard (Edward Petherbridge) receives notification that his Uncle has died, bequeathing him his stately country manor and all its lands. On his return to England he immediately sets about taking stock of all legal matters concerning his new property, but during these dealings Sir Richard seems to be more than a little distracted, he hears strange noises from the ash tree outside his bedroom window.

The story revolves around the planet Shada, on which the Time Lords have constructed a high security prison for some of the Universe's most dangerous criminals. Skagra, a flawed genius from the planet Dronoid, wishes to create a "Universal Mind" in which all the pooled knowledge of the universe's greatest criminals would be placed at his disposal and with which he intends to take control of the Universe. Skagra wants to go to Shada to extract the knowledge of the criminals who have been imprisoned there. Unfortunately for Skagra, knowledge of the location of Shada has been deliberately hidden by the Time Lords, but Skagra discovers that there is a Time Lord living on Earth in the twentieth century who may hold the key to its location. This Time Lord is masquerading as a professor at St. Cedd's College, Cambridge and calling himself Professor Chronotis. Sensing danger, Chronotis calls for the assistance of his old friend and protégé, the Doctor. The story climaxes in a battle for control of the Universal Mind.

Finding out-of-season Brighton beach somewhat lacking, the Doctor and Romana travel to the leisure planet Argolis - but there strange experiments are taking place.

The story introduces Lalla Ward as the newly-regenerated Romana. The TARDIS lands the Fourth Doctor and Romana on a strangely familiar planet. There, they meet the android Movellans, who are locked in a war with the Daleks. The planet is Skaro, and in a bunker sits an enemy long thought dead — Davros, creator of the Daleks.