nondescript fellow. and -- but she said she had a thing for doctors. and she became so enamored of khan. they became very serious. they had a very tempestuous affair. >> khan doesn't like the limelight or want the pressure of being di's guy. while diana keeps khan hidden from the press, she publicly promotes charities close to her heart like the halo trust which advocates against land mines. >> she was aware of the power she had. >> arthur edwards photographs diana's trip to angola, africa, in 1997. >> to go and comfort these kids that had their legs blown off and arms blown off and highlight this sort of -- the awful things about land mines. and then get dressed in all the kit and walk through a minefield. to do that, no, and it would get