Robert Ludlum books in order
29 books in the catalogue, about 292 hours of reading in all; the shortest takes 6 hours and the longest 21 hours.
1 series and 26 standalone books in the catalogue.
Covert-One series
5 books 1 
The Hades Factor 8.1 h 4 
The Altman Code 9.0 h 
The Moscow Vector 8.5 h
The Hades Factor 8.1 h 4 The Altman Code 9.0 h 5 The Lazarus Vendetta length not known
6 The Moscow Vector 8.5 h 7 The Arctic Event length not known
Standalone books
The Chancellor Manuscript 8.5 h 
The Matlock Paper 6.5 h 
The Bourne Identity 9.8 h 
The Scarlatti Inheritance 6.7 h 
Trevayne 8.7 h 
The Cry of the Halidon 7.6 h 
The Rhinemann Exchange 8.2 h 
The Road to Gandolfo 5.9 h 
The Gemini Contenders 7.9 h 
The Holcroft Covenant 9.1 h 
The Matarese Circle 11.0 h 
The Parsifal Mosaic 12.9 h 
The Aquitaine Progression 12.9 h 
The Bourne Supremacy 11.0 h 
The Icarus Agenda 12.5 h 
The Ludlum Triad 21.1 h 
The Bourne Ultimatum 13.2 h 
The Matarese Countdown 10.4 h 
The Prometheus Deception 10.3 h 
Robert Ludlum's The Cassandra Compact 7.3 h 
The Sigma Protocol 11.0 h 
The Janson Directive 11.6 h 
The Bourne Supremacy (Bourne Trilogy, Book 2) 12.5 h 
The Ambler Warning 9.1 h 
The Bourne Identity (Read a Great Movie) 10.6 h 
Robert Ludlum's The Bourne Sanction 10.3 h