The Tough Guy (1961)

Of all people, the meek and lily-livered insurance agent, Nikitas Porfiris, is assigned a dangerous task of the utmost importance: protect at all costs the rare and priceless Othello Diamond. The precious gem belongs to the affluent Greek belle, Mrs Delimeri, who has insured it for the considerable amount of 5,000,000 drachmas--and to ensure that both its owner and the jewel are safe from harm--Nikitas teams up with the experienced undercover investigator, Detective X. However, this is easier said than done, as every ambitious thief in town is after them, dreaming of getting their hands on Mrs Delimeri's inestimable possession. Can the kind-hearted tough guy save the day?