Robert Keller

The Deadly Dozen

2015

Medical Monsters

2016

True Crime Confidential Volume 1

2017

Beyond Evil

2016

Serial Killers Unsolved

2016

Serial Killer Case Files Volume 1

2017

How to Overcome Anxiety: A No-Nonsense Guide to Thriving with Anxiety and Depression (Unabridged)

2019

Cold Cases: Solved Volume 1 : 18 Fascinating True Crime Cases(Cold Cases: Solved)

2022

Cold Cases: Solved Volume 2 : 18 Fascinating True Crime Cases(Cold Cases: Solved)

2022

Cold Cases: Solved Volume 3 : 18 Fascinating True Crime Cases(Cold Cases: Solved)

2022

Cold Cases: Solved Volume 3: 18 Fascinating True Crime Cases (Unabridged)

2022

How to Overcome Depression: The Human Experience of Denial, Abuse, and Vulnerable Ego (Unabridged)

2019