Song and Silence: A Guidebook to Bards and Rogues

From the back cover:

Finesse and versatility
Make Powerful Allies

Bards and rogues rely on a stunning array of skills and abilities to give them an edge over any adversary. Packed with new ways to customize even the most artful characters, this book includdes:

- New feats, prestige classes, weapons, spells, magic items, and equipment.
- Complete guidelines for trapmaking, including 90 sample traps.
- Descriptions of a wide range of thieves' guilds and bardic colleges.
- Detailed rules for flanking opponents in combats.

Dungeon Masters and players who want to add a new dimension to their bards and rogues will find a wealth of indispensable material within these pages.

Expanded by;
The Hand of the Highwayman