Come to the Lighthouse - Kathryn Houghton

Adira Fellows has moved to Boston to start her job as a lighthouse keeper. She struggles with making her own way and navigating life without the comforts of home. 

Events take a turn when she discovers that the lighthouse has the ability to travel through time, and she winds up in the 1700s - on a pirate ship. Things only get stranger from there as she learns the truth about her world, how much she enjoys the company of thieves, and what it means to be truly free. She and John Sterling, a pirate captain, are drawn to each other over their similar spirits and want for power. 

What will she do when forced to decide between the two worlds, and will she give in to her desire for a pirate, or fall for her childhood friend who's been at her side all her life? Only time will tell.