From TARDIS Index File, the free Doctor Who reference.

The Algebra of Ice
Series:	Doctor Who - BBC Past Doctor Adventures
Release Number:	68
Doctor:	Seventh Doctor
Companions:	Ace
Enemy:	The Ice Equation
Setting:
Author:	Lloyd Rose
Publisher:	BBC Books
Publication:	September 2004
Format:	Paperback Book, ? Pages
ISBN:	ISBN 0-563-48621-X
Previous Story:	Synthespians™
Following Story:	The Indestructible Man

Publisher's Summary

A genius maths nerd, a weird webzine publisher, and the Doctor's old ally, the Brigadier find themselves helping the Doctor and Ace solve what should be a simple puzzle: the appearance of a crop circle in the Kentish countryside.

Hardly uncommon. But there are some peculiar features. It's not a circle but a series of square-sided shapes. It's filled with ice. And it draws the Doctor and Ace into a confrontation with a reality right next to zero.

Characters

• The Doctor
• Ace
• Brigadier Lethbridge-Stewart

References

• The Doctor mentions destroying Skaro.

Notes

to be added

Continuity

• The Doctor destroyed Skaro in DW: Remembrance of the Daleks, but also mentions he hasn't destroyed his own homeworld...this foreshadows EDA: The Ancestor Cell.

Timeline

• The Algebra of Ice occurs after: PDA: Loving the Alien
• The Algebra of Ice occurs before: PDA: Atom Bomb Blues

External Links

• The Doctor Who Reference Guide detailed synopsis of The Algebra of Ice
• Whoniverse Discontinuity Guide entry for The Algebra of Ice