There are 4 books in the The Parallel Series series. The newest book is Across Eternity which came out in 2020.

2
Intersect

Book cover of Intersect

A contemporary time travel romance unlike anything else you've ever read.

The Parallel Series continues:

Quinn thought she'd simply dreamed Nick Reilly up. But now, weeks before her wedding, he's appeared in real life. Her doctor. And the longer he's here, trying to save her life, the more she's remembering…

3
Across Time

Book cover of Across Time
"Across Time is my Top Read of 2019, hands down, no questions asked."—Amazon Best-Selling Author Maria Luis
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In a dangerous time before her own...a dangerous attraction. Amelie Besson is on the cusp of attaining the life she's dreamed of—until she finds herself stuck in pre-war France, fifty years before…

4
Across Eternity

Book cover of Across Eternity
The exciting conclusion to Across Time! Separated from Henri by 20 years, Amelie discovers that what she thought was a weakness may be her greatest strength, and that nothing about her family and her gift is what it seemed. Now, with war on the horizon and a challenge she never…