The Shield of Time (Time Patrol #4) - Poul Anderson

Manse Everard is a man with a mission. As an Unattached Agent of the Time Patrol, he's to go anyplace – and anytime! – where humanity's transcendent future is threatened by the alteration of the past. This is Manse's profession, and his burden: for how much suffering, throughout human history, can he bear to preserve?

Wanda Tamberley is a Patrol member in search of her mission. Recruited from sunny California in the late 20th century, she'd rather serve as a scientist in the research branch, exploring Earth's flora and fauna in epochs long past. But as hints accumulate from the Patrol's mysterious leaders uptime, it's beginning to look as if a lot of human history depends on her personal decision – and Manse's.

Meanwhile, the Exaltationists are on the loose, determined to revise human history and rule Time forever... and Manse Everard is sworn to stop them, no matter what the heartbreaking cost!

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Release date: 1990
Genres: science fiction
Updated: August 26, 2021

Time Patrol :: Series

Annals of the Time Patrol
The Time Patrol
Time Patrol
Guardians of Time (Time Patrol #1)
Time Patrolman (Time Patrol #2)
The Year of the Ransom (Time Patrol #3)
The Shield of Time (Time Patrol #4)