M.J. McMullen

Author Information
M.J. McMullen's Latest Book

Newest Release

  • Bibliography:
    5 Books (1 Series)
  • First Book:
    April 2009
  • Latest Book:
    August 2017
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Full Series List in Order

Leo & Gracie

1 - Cat Detectives in the Case of the Missing Socks (Apr-2009)
2 - Cat Detectives: In the Case of the Disappearing Mice (Aug-2009)
3 - Cat Detectives in Where's Ricky? (Mar-2010)
4 - Cat Detectives in the Ghost of Mr. Doodles (Jun-2011)

Book List in Order: 5 titles

  • Cat Detectives in the Case of the Missing Socks

    Leo & Gracie - 1

    Leo and Gracie live with 5 other cats and their owners - Michael and Joanna. In this story they are on the hunt for Michael's missing socks and Leo tries to deal with Gracie's bad attitude towards the other cats....

  • Cat Detectives: In the Case of the Disappearing Mice

    Leo & Gracie - 2

    In case 2 of the Leo & Gracie: Cat Detectives series, Leo & Gracie are searching for the missing "Merry Christmas" toy mice. Hear Clawdius, the head cat of the group, tell the other cats his take on "what is Merry Christmas?"...

  • Cat Detectives in Where's Ricky?

    Leo & Gracie - 3

    Leo and Gracie are kept busy keeping up with Ricky, the mischievous black cat, who is always going missing. Once again Ricky has disappeared which has Leo and Gracie sinking their claws into a new case. As usual Gracie is bullying the other cats whic...

  • Cat Detectives in the Ghost of Mr. Doodles

    Leo & Gracie - 4

    It is almost Halloween and the cats and humans at #10 Merton Drive are preparing for the trick or treaters and receive an unexpected guest - the ghost of Mr. Doodles. Follow Leo and Gracie as they try to figure out if there really is such a thing as ...

  • Leo & Gracie

    In this final book of the Leo & Gracie: Cat Detectives series we find Gracie in serious trouble after injuring her owners Michael and Joanne. Gracie has been charged with crimes against the cat code and uncatlike behavior. Her brother Leo takes the C...



Frequently Asked Questions (FAQ)

M.J. McMullen has published 5 books.

M.J. McMullen does not have a new book coming out soon. The latest book, Leo & Gracie, was published in August 2017.

The first book by M.J. McMullen, Cat Detectives in the Case of the Missing Socks, was published in April 2009.

Yes. M.J. McMullen has 1 series.
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