End of Day by Jewel E. Ann is the first book in her Jack & Jill series. It is not a quick light read - so be warned. When you begin be prepared to get sucked into a complicated (but not overly so) plot and some damaged (but we still love 'em anyways) characters. 
 It's a book that is a little difficult to review without spoiling the plot but the story slowly gives you pieces and parts of the puzzle and as it draws to a close (until book two is released) you gain a better understanding of both Jessica Day/Jillian Knight and her twin Jude Day/Jackson Knight. Honestly, make sure you have yourself ready to step into an in-depth story before you begin this, but it is well worth it. 
 The pacing is steady and the story well-written. Descriptive without being TOO descriptive. 
 This is the first time I've read this author but it won't be the last.