John D. MacDonald - USA
Search Bookshop.org for John D. MacDonald | Search Wikipedia for John D. MacDonald | More mystery writers with links to USA Florida

Jassy Mackenzie - South Africa
Search Bookshop.org for Jassy Mackenzie | Search Wikipedia for Jassy Mackenzie | More mystery writers with links to South Africa

Barry Maitland - England Australia
Search Bookshop.org for Barry Maitland | Search Wikipedia for Barry Maitland | More mystery writers with links to England Australia

Ernesto Mallo - Argentina
Search Bookshop.org for Ernesto Mallo | Search Wikipedia for Ernesto Mallo | More mystery writers with links to Argentina

Henning Mankell - Sweden Mozambique
Search Bookshop.org for Henning Mankell | Search Wikipedia for Henning Mankell | More mystery writers with links to Sweden Mozambique

Petros Markaris - Greece
Search Bookshop.org for Petros Markaris | Search Wikipedia for Petros Markaris | More mystery writers with links to Greece

Ngaio Marsh - England New Zealand
Search Bookshop.org for Ngaio Marsh | Search Wikipedia for Ngaio Marsh | More mystery writers with links to England New Zealand

William Leonard Marshall - Hong Kong
Search Bookshop.org for William Leonard Marshall | Search Wikipedia for William Leonard Marshall | More mystery writers with links to Hong Kong

Sujata Massey - Japan India
Search Bookshop.org for Sujata Massey | Search Wikipedia for Sujata Massey | More mystery writers with links to Japan India

Seicho Matsumoto - Japan
Search Bookshop.org for Seicho Matsumoto | Search Wikipedia for Seicho Matsumoto | More mystery writers with links to Japan

Peter May - China
Search Bookshop.org for Peter May | Search Wikipedia for Peter May | More mystery writers with links to China

Archer Mayor - USA
Search Bookshop.org for Archer Mayor | Search Wikipedia for Archer Mayor | More mystery writers with links to USA Vermont

Ed McBain - USA
Search Bookshop.org for Ed McBain | Search Wikipedia for Ed McBain | More mystery writers with links to USA New York

Luke McCallan - Europe Region
Search Bookshop.org for Luke McCallan | Search Wikipedia for Luke McCallan | More mystery writers with links to Europe Region

James McClure - South Africa
Search Bookshop.org for James McClure | Search Wikipedia for James McClure | More mystery writers with links to South Africa

Val McDermid - Scotland England
Search Bookshop.org for Val McDermid | Search Wikipedia for Val McDermid | More mystery writers with links to Scotland England

John McFetridge - Canada
Search Bookshop.org for John McFetridge | Search Wikipedia for John McFetridge | More mystery writers with links to Canada

Michael McGarrity - USA
Search Bookshop.org for Michael McGarrity | Search Wikipedia for Michael McGarrity | More mystery writers with links to USA New Mexico

Brian McGilloway - Ireland
Search Bookshop.org for Brian McGilloway | Search Wikipedia for Brian McGilloway | More mystery writers with links to Ireland

Clinton Mckinzie - USA
Search Bookshop.org for Clinton Mckinzie | Search Wikipedia for Clinton Mckinzie | More mystery writers with links to USA Colorado Wyoming

Patricia Melo - Brazil
Search Bookshop.org for Patricia Melo | Search Wikipedia for Patricia Melo | More mystery writers with links to Brazil

Deon Meyer - South Africa
Search Bookshop.org for Deon Meyer | Search Wikipedia for Deon Meyer | More mystery writers with links to South Africa

Larry Millett - USA
Search Bookshop.org for Larry Millett | Search Wikipedia for Larry Millett | More mystery writers with links to USA Minnesota

Mark Mills - USA Europe Region
Search Bookshop.org for Mark Mills | Search Wikipedia for Mark Mills | More mystery writers with links to USA Europe Region

Zygmunt Miloszewski - Poland
Search Bookshop.org for Zygmunt Miloszewski | Search Wikipedia for Zygmunt Miloszewski | More mystery writers with links to Poland

Denise Mina - Scotland
Search Bookshop.org for Denise Mina | Search Wikipedia for Denise Mina | More mystery writers with links to Scotland

Miyuki Miyabe - Japan
Search Bookshop.org for Miyuki Miyabe | Search Wikipedia for Miyuki Miyabe | More mystery writers with links to Japan

Christopher G. Moore - Thailand
Search Bookshop.org for Christopher G. Moore | Search Wikipedia for Christopher G. Moore | More mystery writers with links to Thailand

R. N. Morris - Russia
Search Bookshop.org for R. N. Morris | Search Wikipedia for R. N. Morris | More mystery writers with links to Russia

Walter Mosley - USA
Search Bookshop.org for Walter Mosley | Search Wikipedia for Walter Mosley | More mystery writers with links to USA California

Marcia Muller - USA
Search Bookshop.org for Marcia Muller | Search Wikipedia for Marcia Muller | More mystery writers with links to USA California

Search Bookmooch (international book exchange site) for tha authors listed:
John D. MacDonald   Jassy Mackenzie   Barry Maitland   Ernesto Mallo   Henning Mankell   Petros Markaris   Ngaio Marsh   William Leonard Marshall   Sujata Massey   Seicho Matsumoto   Peter May   Archer Mayor   Ed McBain   Luke McCallan   James McClure   Val McDermid   John McFetridge   Michael McGarrity   Brian McGilloway   Clinton Mckinzie   Patricia Melo   Deon Meyer   Larry Millett   Mark Mills   Zygmunt Miloszewski   Denise Mina   Miyuki Miyabe   Christopher G. Moore   R. N. Morris   Walter Mosley   Marcia Muller