Task 1: Postcard from "Slice"

Task 1: Postcard from "Slice"
Kingston brought a postcard sent from "Slice" to one of his therapy sessions with Summer. To complete this task, examine the postcard and figure out:
1) Who Kingston thinks "Slice" is
2) What city "Slice" was living in when Summer was killed
3) What city "Slice" was born in
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Hints
If you're stuck on the third question (what city "Slice" was born in, skip ahead to hint #4).
Free Hint
Hint #1
Hint #2
Hint #3
Hint #4 (Start here if you're stuck on the third question)
Hint #5
Hint #6
Hint #7/Answer

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