In The Tell (episode), it was revealed that she has at least one unnamed sister.
Ryan also helped the team with a case regarding Harper Dearing, a businessman/terrorist who sought revenge against the Navy for the death of his son.
Unfortunately, after Dearing arranged for the release of her ex-husband, Liam Dunham from jail, Ryan presumably resigned from her position at the DoD and fearing that her ex who had been imprisoned would come after them, Ryan along with her young son, Parker Ryan were forced to flee for good while Ryan also permanently ended her relationship with Gibbs much to Gibbs's own dismay.
- Jamie Curtis and Mark Harmon previously guest-starred alongside one another in the film, "Freaky Friday".
- During her numerous guest appearances on NCIS, Jamie Lee Curtis was credited as a Special Guest Star.
- Dr Ryan participates in missions known as Military Information Support Operations (MISO), or what was previously known as PSYOPS (Psychological Operations). The purpose of PSYOPS is either to inform or at worst, manipulate a target audience (about winning "hearts and minds").