Books

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The Violence Project

The Lives of Mass Shooters

With Jillian Peterson

Abrams Press, 2021

Understanding Gangs

Past, Present, & Future

With Scott Decker & David Pyrooz

Temple University Press, 2021

Scotland's Gang Members

Life and Crime in Glasgow

With Robert McLean

Palgrave Macmillan, 2020

County Lines

Criminal Networks and Evolving Drug Markets in Britain

With Robert McLean & Grace Robinson

Springer, 2020

Minnesota's Criminal Justice System

With Jeff Bumgarner & Susan Hilal

Carolina Academic Press, 2016

How Gangs Work

An Ethnography of Youth Violence

Youth Justice

Special Issue: Street Gangs, Group Offending and Violence

Edited with Ross Deuchar & Simon Harding

Sage, 2020