Liberty or Death (The Thea Kozak Mystery Series, Book 6)

Thea Kozak''s sometimes rocky relationship with Maine state police detective Andre Lemieux has flourished. Now, on the day of their wedding, Thea receives awful news: Andre has been taken hostage by a militant militia group. Their terms: release one of their members from jail.
The State of Maine isn''t interested in co-operating. Neither is the prisoner.
Taking the situation in-hand, Thea goes undercover in the town where she suspects Andre is hidden, and comes face-to-face with the most terrifying and ruthless adversaries of her life.

THE THEA KOZAK MYSTERY SERIES, in order
Chosen for Death
Death in a Funhouse Mirror
Death at the Wheel
An Educated Death
Death in Paradise
Liberty or Death
Stalking Death
Death Warmed Over