: Mehmed’s forces employ Serbian miners to dig underground tunnels in an attempt to undermine and shatter the city walls from beneath.

The episode follows Sultan Mehmed II's increasingly desperate efforts to break through the formidable Byzantine defenses after his initial frontal assaults are repelled.

The third episode of the docu-drama series ( Rise of Empires: Ottoman ), titled " Nel Corno d'Oro " (Into the Golden Horn), depicts a critical turning point in the 1453 siege of Constantinople. Episode Summary

: The tactical rivalry intensifies between the young Sultan and the veteran Genoese mercenary leader, Giovanni Giustiniani , who continues to forestall the Ottoman Janissaries. Key Historical Context