More like The Testament

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Deception PointNovel
Dan Brownstandalone novel2001
Mystery & detective, mysterious in tone, about murder investigation, set in arctic & antarctica.
State of FearNovel
Michael Crichtonstandalone novel2004
Techno-thriller, about ecological collapse.
Digital FortressNovel
Dan Brownstandalone novel1998
Techno-thriller, about surveillance.
DepartureNovel
A. G. Riddlestandalone novel2014
Time travel and science fiction, mysterious in tone, about survival.
“As they begin to piece together the truth, they discover they have the power to change the future and the past--to save our world. or end it.”
from the catalogue
Strangled SilenceNovel
Oisin McGannstandalone novel2008
Mysterious in tone, about amnesia.
“Ivor thinks he's been made to forget what happened in Sinnostan.”
from the catalogue
The CobwebNovel
Neal Stephenson & J. Frederick Georgestandalone novel1996
Mysterious in tone, set in north america.