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Taking a while so i got out. >> reporter: then more specific. >> about 15 minutes, 20 minutes. >> reporter: later another revision -- >> maybe about five minutes. >> reporter: and, detectives were perplexed by what sandra claimed she did and did not hear that night -- >> hear anybody scream? >> no. >> hear the dogs? oh, you hear the dogs barking? >> yeah because they were outside our window. >> reporter: but, after almost two hours in, as investigators pushed her, sandra seemed to tweak this key...

Claimed she did and did not hear that night -- >> hear anybody scream? >> no. >> hear the dogs? oh, you hear the dogs barking? >> yeah because they were outside our window. >> reporter: but, after almost two hours in, as investigators pushed her, sandra seemed to tweak this key element of her story -- >> actually i dont even remember hearing the dogs. my husbands the one that says hes got better hearing than i -- >> reporter: of course, the change-ups in sandras story could be attributed to shoc...

Claimed she did and did not hear that night -- >> hear anybody scream? >> no. >> hear the dogs? oh, you hear the dogs barking? >> yeah because they were outside our window. >> reporter: but, after almost two hours in, as investigators pushed her, sandra seemed to tweak this key element of her story -- >> actually i dont even remember hearing the dogs. my husbands the one that says hes got better hearing than i -- >> reporter: of course, the change-ups in sandras story could be attributed to shoc...

>> my memory is so bad. >> reporter: it seemed implausible to them that sandra really heard nothing the entire night. >> this is happening in a very small space? the husband is stabbed to death and found in one closet. and shes been tied up in another? >> thats right. >> reporter: the investigators closely studied that interview theyd conducted with sandra. they found her more indifferent than distraught. >> do you know what has happened today? >> my husband was murdered. >> how? >> i dont know....

>> maybe about five minutes. >> reporter: and, detectives were perplexed by what sandra claimed she did and did not hear that night -- >> hear anybody scream? >> no. >> hear the dogs? oh, you hear the dogs barking? >> yeah because they were outside our window. >> reporter: but, after almost two hours in, as investigators pushed her, sandra seemed to tweak this key element of her story -- >> actually i dont even remember hearing the dogs. my husbands the one that says hes got better hearing than ...

Gain -- not that the president of the united states doesnt already, hes a big figure by being president of the united states and this man was a dangerous rogue and a threat to the world and now being put up on a camp davidedestal. an iconic figure of peace and things can change and he can send a message to the world, im a catalyst to the ange. >> sandra: and were looking at live pictures from singapore, i wonder if you can put into perspective what this means for the markets. wow, what a lot for...