Uranium235
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Hypothesis one: the man was killing. He was killing unsuccessfully.
Hypothesis two: Alex is the man.
Jacondu was questioned; I will postpone the questioning for now.
Hypothesis three: the two bodies in the fountain are related to Swift.
Hypothesis four: the cat found a piece of the amulet.
I will think more about the reports and the incident on the street, as well as the questioning.