Ocean Wolves II: Harbinger by Theresa Beachman

She survived the unthinkable.
She doesn’t want his protection.

Marine biologist, Dr. Kathrine Sorland barely survived her first marriage. Now, Jones, her dog is the only male she has time for in her life. When protester activity threatens her team’s work monitoring a quarantine zone in the Norwegian Sea, Kathrine is forced to accept the protection of the Ocean Wolves. Working with their commander is a challenge, not least because he reignites feelings in her heart she believed long dead.
Formerly in the Russian Navy, Nik Borostovlo is in command of the Wolves for the first time. Married to his job, responsibility weighs heavy on his shoulders. There’s no room in his life for a woman, but no matter how hard he tries, he can’t deny his attraction to the strong-willed scientist.
As dangerous events escalate in the water, Nik is compelled to work closely with Kathrine. Her team has discovered something deep under the ice. Something that threatens the world’s oceans and must be kept from the wrong hands, whatever the cost. Nik may be the only person Kathrine can trust and time is running out.
As Nik battles to safeguard the woman he’s falling for, desire burns incandescent between them. Soon, Nik will discover that some scars run more than skin-deep and the toughest surround Kathrine’s heart.