Bombs on Trains — Lyndsey Norton

This is the story of Detective Sergeant Rebecca Castle
and her struggle to stop terrorists from destroying the
Eurostar, the Channel Tunnel, and the Royal Train, as
she discovers the high cost of promotion along the way.
From the battleground of Basra to the Tunnel in Kent, with the
aid of the SAS and MI5, this tale takes her through the bloody
extermination of soldiers, the kidnap of her husband, and the
power of having the whole resources of the UK in her hands to
stop Abdullah Razzac Fakesh from achieving his goal.