Mark Sanderson

Mark Sanderson

Five O'Clock Blue Entertainment

Screenwriter and script consultant in Los Angeles, California

About Mark

Mark Sanderson (aka @Scriptcat) is a Los Angeles based screenwriter, script consultant, and sometimes actor blessed to be living his childhood dream of making movies with thirty-three screenplays written in genres ranging from comedy to drama — from his sketch comedy writing and performing as a founding member with The Amazing Onionheads and writing for MTV, to his spec sale and eighteen screenplay assignments with television premieres and worldwide distribution of his eight emotionally compelling films— the WWII indie feature “I’ll Remember April,” Lifetime Network's “An Accidental Christmas” and “Deck the Halls,” the stylish indie noir feature “Stingers,” and action-packed thrillers “USS Poseidon: Phantom Below” (aka HereTV's "Tides of War") and SyFy Network's "Sea Snakes" (aka Fox's “Silent Venom”), LMN's "Mother of All Lies" starring Franchesca Eastwood and Lifetime's highly rated thriller "Mommy's Little Murderer" starring Fiona Gubbelmann. Mark's latest produced film, FATAL MISTAKES, stars Ashley Scott (A.I., Into the Blue, Walking Tall), recently wrapped production.

Mark's films have premiered on Lifetime Network, LMN, SyFy, Fox, HereTV, HBO Canada, Christmas 24, and NBC/Universal, The Movie Network, and have been distributed globally. His films have been recognized at festivals including a premiere and opening the Palm Springs Int. Film Festival, premieres at the Hawaii Int. Film Festival, St. Louis Int. Film Festival, The Rainbow Festival in Hawaii, Newport Beach Int. Film Festival, Fort Lauderdale Int. Festival, and nominated for the Starboy award at the Oulu Int. Children's Film Festival in Finland.

Mark’s long association with award winning Hollywood filmmakers dates back to his first produced screenplay and has since worked with Academy Award® winning producers Paul Colichman (Academy Award® winner "Gods & Monsters") and Mark R. Harris (Academy Award® winner "Crash"), veteran directors Brian Trenchard-Smith, Fred Olen Ray, George Mendeluk, and the late Bob Clark, and has written films starring Academy Award® acting nominees Seymour Cassel, the late Pat Morita, Haley Joel Osment, Tom Berenger, and Emmy® acting nominees Mark Harmon and James Hong.

Mark has five projects in development including among others the sci-fi TV series "Paranormal X" with director Dan Harris and producer Mark Harris (Crash), and the webseries "Tribulations" with director Joe Palese. Mark completed work as the production consultant on the screenplay for the feature "Bitter Harvest" directed by George Mendeluk that stars Max Irons, Samantha Barks, Terence Stamp and Barry Pepper. The indy film was distributed worldwide theatrically in February of 2017. Mark's new screenwriting book on how to survive in Hollywood's trenches, "A Screenwriter's Journey to Success" is now available on Amazon:

Check out Mark's popular screenwriting blog MY BLANK PAGE, picked by Script Magazine as "Website of the Week" and he offers screenplay consulting services, workshops, and webinars at his website:

Twitter/Periscope: @Scriptcat

Screenwriting Youtube Channel:

On-demand webinar available for streaming rental:

Name: Mark Sanderson

Lives in: Los Angeles, California

Company: Five O'Clock Blue Entertainment

Occupation: Screenwriter and Script Consultant



  • UCLA Film School

Desert Island Movies

register for stage 32 Register / Log In