It's that time of year when the world falls in love. ' Join four of your favorite authors for tales of Christmas romance to remember forever. 'Under the Mistletoe,' Lisa Jackson Megan Johnson's marriage is over-or so she thinks. When her husband Chris lands in the hospital, fighting for his life, she remembers the unexpected joy of their first Christmas together. 'A Ranger for Christmas,' Mary Burton The holidays bring painful memories for history professor Marissa Thompson. Agreeing to h