Finn Canon: Serial Suicides

Inspired by Sherlock "A Study In Pink"

22 year old Helena Spring has lived in an apartment for the past 5 years in Seattle Washington, after being kicked out of her house at 17 years old. In those 5 years, she's lived a level below another apartment that has contained 3 deaths which appeared to be suicides, but are too suspiciously related for there to be no concern by the police.
On the morning of April 9th 2015, it was pouring rain when Helena wakes up to loud thunder and screams from the above level. She calls the police immediately, where they find what appears to be another suicide scene, almost identical to the one from a year and 3 months before.
Finn Canon, a Child Prodigy, 23 years old, Is called onto his first case as a new detective for the Seattle police.
His miraculous strategy seems to make the case too easy to solve, but results in attempted murder on his life.