Eight friends in Andova have come down with an illness. They were all healthy and fine until one became infected. Over four days, the infection spread from one to all eight.

Here, under each friend's name is a list of people they interacted with over those four days. There was only one interaction per day. Determine who brought the disease into this circle of friends.

Note: Whoever came into contact with an infected person immediately became sick and contagious, and they stayed that way for the rest of the four days.




Facts uncovered by public health officials:

1. Raine was not infected before Day 3

2. Cain was not infected before Day 3

3. Patient zero has an “i” in their name




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