How will life at NCIS change when Gibbs finds a letter from Special Agent Caitlin Todd one month after she dies? Will he be able to follow her last wish or will it be too much for him to handle?

When twenty-four year old Jenny Shepard joins NCIS she has no idea what's in store for her as she fights her way through a predominantly male environment, how will she manage having a massive hard ass, former marine for a boss? How will she balance work and a personal life? Pre-series, not necessarily AU, follows along with what we've been told about Jenny's years as a probie.