When the former member of an Irish terrorist group begins stealing antiques and blowing up antique trucks, the agency's number 1 spy in the British division - Ian Leslie, with a licence to terminate - joins them. He's suave, sophisticated and is spending a lot of time getting to know Li Ann. Mac and Vic, obviously jealous, try to interfere with their relationship. The Director also warns her to stay away from him as he is really there to kill the terrorist. Ian denies it but Li Ann is unsure.
As the group come together at the climax of their adventure, Mac comes to realise he still loves Li Ann but he doesn't think she feels the same way; Vic is unsure of what he feels but worries he may lose her to Mac; and Ian has to make a new evaluation of who he can trust. Li Ann, knowing Ian didn't lie to her is sad to see him leave but knows that ""he won't even think about another woman for a long time"". But little does she know he and the Director are already on a plane to Paris...
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