Inside the Lines
Directed by	David Hartford
Written by	Monte M. Katterjohn
Based on	Inside the Lines 1915 play by Earl Derr Biggers
Starring	Lewis Stone Marguerite Clayton George Field
Cinematography	Walter L. Griffin
Production company	Delcah Photoplays
Distributed by	World Film
Release date	August 26, 1918 (1918-08-26)
Running time	60 minutes
Country	United States
Languages	Silent English intertitles

Inside the Lines is a 1918 American silent thriller film directed by David Hartford and starring Lewis Stone, Marguerite Clayton and George Field.^[1] It was based on a play by Earl Derr Biggers, later remade as a 1930 sound film of the same title.

The Germans order their top spy from Egypt to Gibraltar as part of a plan to destroy the British fleet.

• Ken Wlaschin. Silent Mystery and Detective Movies: A Comprehensive Filmography. McFarland, 2009.

• Inside the Lines at IMDb
• Inside the Lines at the TCM Movie Database
• Inside the Lines at the AFI Catalog of Feature Films

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