The Breath Before Forever by Bethany-Kris

The universe isn’t done with Vaslav Pashkov just yet …
Perhaps marrying a man whose secrets weren’t entirely revealed wasn’t the smartest choice of Vera Avdonin’s life, but her new husband makes the decision hard to regret.
Even when it brings agony.
Yet, not even wedded bliss and love is enough to keep Vera from peeling back the remaining layers of Vaslav’s past and truth—and there are always consequences for what she might find.
The price of loving a man like this one is high.

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The Breath Before Forever is the final Vaslav/Vera book in The Beast of Moscow saga and should not be read as a standalone. Read after books 1, 2, and 3. TW: Pregnancy Loss.