A dark, epic, reverse-harem finale of love, loss, and power

Teddy Nowak has faced exile, betrayal, and the breaking of time itself.
Now, the witch who was never meant to survive is the only one who can save two timelines from burning.
Her enemies are gathering.
The fae are falling.
And the magic that once bound time together is tearing itself apart.
To stop the collapse, Teddy must wield every element—Earth, Fire, Water, and Air—and forge her fractured loves into one unbreakable whole.
- Charlie, her steadfast protector.
- Gabe, her heart’s calm center.
- Darwin, her dangerous fae prince.
Together, they’re more than lovers. They’re a family, a force, a quaternion: the balance the world has lost.
But to win the final battle, Teddy will have to embrace what she’s feared most: the power that could make her a legend … or a monster.
A fierce witch. Four entwined souls. One battle to determine the future.
Perfect for readers who crave dark-fantasy romance, found-family bonds, steamy reverse harem dynamics, and heroines who claim their power, no matter the cost.

Publisher's Note: Quaternion is the third and final book in a completed, college-aged, MMFM, whychoose trilogy. Teddy's Boys and Gabe's Girl should be read first. Books 1 and 2 end on cliffhangers. These books are intended for mature readers only.