Tony Curtis Blondell

The tornado destroys Mrs. McCluskey's house, and Lynette faces the possibility that her family may not have survived; Katherine discovers that someone knows about her mysterious past.

When Hetty turns in retirement papers and disappears, Shay Mosley comes to Los Angeles to oversee the team and makes staffing changes; Sam insists that Callen find a new partner.

The team must find assailants who illegally crossed the border and attacked California Highway Patrol officers; Homeland Security sends Nell's older and bossy sister to assist with the case.

The team tracks a highly-skilled assailant determined to avenge her father's death by killing a Brazilian diplomat.