How would Ivory have known that? Was he a witness to their marriage 24/7 from the wedding onward?
I agree with you that Dr. MacDonald and Colette might have had little disagreements, as is usual in any marriage, but there were never violent arguments where the police would have been called, and which could lead to murder. There was some story that a neighbor, Kalin, heard an argument because Dr. MacDonald had purchased a TV set.
This matter was discussed at the Article 32 proceeding in 1970 with Army CID agent Shaw:
Q Did they ever have any violent arguments?
A I do not know.
Q There was no indication in your reading of the investigation that there was any particular problem which led to a violent argument or anything?
A Well, they supposedly had arguments, according to neighbors, and sometimes violent arguments, violent in raised voices.
Q Raised voices? When was the last raised-voice argument any neighbor might have heard the MacDonalds having before this night?
A Before that night? I can't give you a specific date.
Q Was it within a week or month or a few months?
A I don't know.
Q With regard to Captain MacDonald's love of his children, was there any indication that you have, other than the alleged statement by a bus driver, that he was anything but a good father and loved his children very deeply?
A On the contrary, everything that I have personally developed or have heard of says that he loved his children very much and was a good provider and was a good father.
Q In general?
A Yes.
Q What possible motive would he have for killing--actually I think Mr. Ivory used Colonel Kriwanek's expression or description of "overkill"--of his two children, brutally beating and stabbing of his two children, what possible motive would he have to do this?
A Of "over killing," or just killing them?
Q Both; killing in that fashion?
A Well, to kill them in that fashion, I would say, and it is an opinion, that there was a deliberate attempt on the part of Captain MacDonald to put more than one killer in the house. In other words, we have four different weapons, which would indicate there were four persons there.