Each book in the Untying the Knot series follows a married couple, Erik and Allie, as they experiment with a BDSM element. In Spread, Erik surprises Allie with a date night. In romance books, the main male characters are rarely married from the beginning of the series. I love that they are working on adding spice to their relationship, and as you can probably guess from the cover, they try out a St. Andrew's Cross. There is a teaser at the end for the rest of the series.