Gone to dust / Matt Goldman.

Enhanced descriptions from Syndetics:

Set in Minnesota, Gone to Dust is the New York Times bestselling debut private eye murder mystery from Emmy Award-winning Seinfeld writer Matt Goldman.

"Sharp wit, complex characters, and masterful plotting makes Goldman a writer to watch. Irreverent and insightful, private detective Nils Shapiro is sure to become a fan favorite."--Harlan Coben, New York Times bestselling author

A brutal crime. The ultimate cover-up. How do you solve a murder with no useable evidence?

Private detective Nils Shapiro is focused on forgetting his ex-wife and keeping warm during another Minneapolis winter when a former colleague, neighboring Edina Police Detective Anders Ellegaard, calls with the impossible.

Suburban divorcee Maggie Somerville was found murdered in her bedroom, her body covered with the dust from hundreds of emptied vacuum cleaner bags, all potential DNA evidence obscured by the calculating killer.

Digging into Maggie's cell phone records, Nils finds that the most frequently called number belongs to a mysterious young woman whose true identity could shatter the Somerville family--but could she be guilty of murder?

After the FBI demands that Nils drop the case, Nils and Ellegaard are forced to take their investigation underground, where the case grows as murky as the contents of the vacuum cleaner bags. Is this a strange case of domestic violence or something with far reaching, sinister implications?

"A perfect blend of light touch and dark story--I want more of Nils Shapiro." --Lee Child, New York Times bestselling author