They stayed purely colleagues throughout until this very last moment in season 18's eighth episode. Before leaving, Gibbs passionately kissed Sloane, leaving fans emotional wrecks as they were no longer able to be together. Despite this farewell, the crime drama has majorly hinted at a possible return of Sloane. NCIS: As they said goodbye, Gibbs kissed Sloane in Afghanistan. (Image: CBS) Trending NCIS: Sloane sent an email which said "till we meet again", hinting at her future return. (Image: CBS) Is Jack Sloane going to return to NCIS? In the following episode Winter Chill, Agent Timothy McGee (Sean Murray) received an email from Sloane.