One year ago, Tim Bradford broke Lucy Chen's heart and walked away without explanation. Now Sergeant Lucy Chen is stronger, promoted, and determined to never let him close again. Until she's assigned to a four-month undercover operation. Living in a van. Posing as a couple. Driving from Los Angeles down the coast to Baja, Mexico. With her ex. Every touch is "for the cover." Every kiss is supposed to be fake. But the longer they're trapped together, the harder it is to ignore the tension, the memories... and the questions Lucy never got answers to. Because Tim didn't just leave. He hid something. And somewhere between fake love and real danger, Lucy is about to find out the truth - The real reason he walked away.