Did a fertility doctor's dogs kill his wife? Or was her death at the bottom of the stairs a meticulously staged scene? The "48 Hours" investigation into the puzzling death of Susann Sills is a twisty turn of shocking revelations, 911 calls, and a controversial theory that will leave you questioning everything. Join us as we delve into this perplexing case, exploring the evidence, witness testimonies, and the chilling details that challenge the narrative. Plus, hear a post-mortem discussion with "48 Hours" correspondent Tracy Smith and producer Gayane Keshishyan Mendez.