In The Paradise of Death and The Ghosts of N-Space, the Third Doctor reunites with Sarah Jane Smith and UNIT for adventures on Earth and beyond, first broadcast on BBC Radio in the 1990s.

In Doctor Who and the Pescatons, made for LP release in 1976, the Fourth Doctor and Sarah fight alien invasion on present day Earth.

The duo return in Exploration Earth: The Time Machine, for BBC Schools Radio, in which they witness the Earth's early development.

Whatever Happened To...Susan? is a tongue-in-cheek look at how Susan Foreman's life might have turned out after her adventures with the Doctor, and Slipback is a full-throttle adventure for the Sixth Doctor and Peri, first broadcast on BBC Radio in 1985.

Also included in this new edition is a 45 minute conversation with Elisabeth Sladen, recorded exclusively for BBC Audio in 2004.

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