Chris Lynch

 wrote several stories for the Lethbridge-Stewart series and The Lucy Wilson Mysteries.

Lethbridge-Stewart

 * The George Kostinen Mystery

The Lucy Wilson Mysteries

 * Curse of the Mirror Clowns

The Lucy Wilson Mysteries

 * A Little Lucy Christmas
 * Past, Present & Yet To Come (in Christmas Special)
 * The Gray Lady of Martyr's House
 * The Krampus Who Came to Tea

Lethbridge-Stewart

 * The Arcade of Doom (in Lineage)

UNIT

 * Honourable Discharge (in Operation Wildcat and Other Stories)