Tony and Ziva (Cote de Pablo, Michael Weatherly) fans should enjoy tonight’s episode of “NCIS.” The two share a slow dance while hunting her father’s killer in Germany. Can a major smooch be far behind? 7 p.m., CBS.

Is your financial future in peril? “The Retirement Gamble” is a new “Frontline” installment that raises troubling questions about the security of our IRA and 401(k) plans. Shudder. 10 p.m., PBS.

Tony and Ziva (Cote de Pablo, Michael Weatherly) fans should enjoy tonight’s episode of “NCIS.” The two share a slow dance while hunting her father’s killer in Germany. Can a major smooch be far behind? 7 p.m., CBS.

 Is your financial future in peril? “The Retirement Gamble” is a new “Frontline” installment that raises troubling questions about the security of our IRA and 401(k) plans. Shudder. 10 p.m., PBS.