J. R. Salem Publishing← Back to the publisher

A pulp adventure serial by P. E. Bradford

The Agartha Affair

Ancient cities. Impossible histories. One expedition that should never have begun.

Descend into a lost world of buried empires, ruthless adversaries, forbidden doors, and secrets powerful enough to rewrite history. The four-book core series is built for readers who miss the speed, danger, and sheer audacity of classic pulp adventure.

Start with Book OneView reading order
Book cover of The Mud Flood of Tartaria by P. E. Bradford
Book cover of The Wild Women of Agartha by P. E. Bradford
Book cover of The Yellow King and the Blind Door by P. E. Bradford
Book cover of The Broken Covenant by P. E. Bradford

01 Four-volume core adventure

02 Retro pulp energy

03 Lost worlds & secret histories

04 Companion novellas

The Agartha Affair: The Complete Cycle by P. E. Bradford

Coming July 25, 2026

The complete four-book saga

The entire expedition. One definitive volume.

The Agartha Affair: The Complete Cycle brings all four numbered adventures together in a single paperback collection. Enter the buried cities, forbidden thresholds, and lost worlds of P. E. Bradford’s retro-pulp epic from its first discovery to its final reckoning.

Paperback release

The core series

Begin at the beginning. Survive to the end.

The Agartha Affair is one continuous descent. Read the four numbered volumes in order for the complete expedition.

The Mud Flood of Tartaria by P. E. Bradford

Book One

The Mud Flood of Tartaria

The expedition begins with buried civilizations, impossible ruins, and a mystery that refuses to stay underground.

Buy on Amazon
The Wild Women of Agartha by P. E. Bradford

Book Two

The Wild Women of Agartha

The descent continues into a savage hidden realm where every alliance has teeth and survival carries a price.

Buy on Amazon
The Yellow King and the Blind Door by P. E. Bradford

Book Three

The Yellow King and the Blind Door

A forbidden threshold, an ancient power, and a door that was never meant to open draw the affair deeper into darkness.

Buy on Amazon
The Broken Covenant by P. E. Bradford

Book Four

The Broken Covenant

The secrets of Agartha surface as loyalties fracture and the cost of discovery finally comes due.

Buy on Amazon

Beyond the numbered volumes

More stories from beneath the surface.

Prequels and companion novellas widen the map, reveal hidden costs, and follow familiar figures beyond the main expedition.

Reader reactions

Reports from the expedition.

Reader review: A surprisingly absorbing adventure, a classic lost-world tale with real depth.
Review 1 of 5
Reader review praising Eleanor as an effective counterweight whose knowledge and instincts complicate every decision.
Review 2 of 5
Five-star reader review: A wonderful adventure, nostalgic if you are a fan of Indiana Jones.
Review 3 of 5
Reader review: Watching Dr. Billy Reuben tumble from grace to Antarctica kept me riveted.
Review 4 of 5
Reader review praising Chowduray as the standout character and a modern reimagining of Captain Nemo.
Review 5 of 5

Swipe to explore more reader reviews.

The entrance is open

History is only the version that survived.

Start with The Mud Flood of Tartaria and follow the expedition into the hidden world below.

Begin the series