Traces of Grey: Book Four of The Alexis Stanton Chronicles

Nursing White back to health for the past two months has prevented Grey from taking on any new projects. She's more than ready to get back to work when White offers her a simple surveillance job.

The basic op turns up something from the past, putting extra pressure on White, and cutting Alex off the elite need-to-know list.

Everyone has secrets, but some are more guarded than others.