Guest Stars Kavi Ladnier as NCIS Reserve Agent Shyla Dahr Christine Horn as Elliot Reynolds Nicky Endres as Kim Cho Josie Nivar as Pilar Gildart Jackson as Gerard Dupont Adam Lustick as Hieronymus Czarina Mada as Elena Maldonado Co Starring Duncan Campbell as NCIS Special Agent Castor Beckett Gunderson as Young Callen Aaron Coleman as Ross Samantha Gangal as Teenage Girl David Will No as Wen