There is a great plot here, with new starts and second chances, promises kept and boundaries crossed in the name of love. It is fun to see Lyle develop into a sexy beast when his character before was anything but - and his transformation was (for me, anyway) totally believable. I had always loved and admired his loyalty even as a dirtbag criminal, and I love that Vivienne decided to give him his own book. Dr. Julia is a no nonsense genius. She knows what she wants, from creating cutting edge artificial limbs to giving in to temptation with her patient. Their struggle to reconcile their romance across the wrong side of the tracks is sweet to witness.
As always, the characters are well drawn, the plot engaging, and the happy-ever-after is sweet. If you like a sweet but super sexy paranormal romance, you'll love Old Dog, New Tricks. I'd give it an R rating for sexual situations and some profanity.