Cold Boots: Book 10 in the humorous scifi series

Return (The Invasion Chronicles—Book Four): A Science Fiction Thriller

Hal Spacejock Omnibus One: Contains Hal Spacejock books 1-3, plus Visit

Arrival (The Invasion Chronicles—Book Two): A Science Fiction Thriller

Hal Spacejock Omnibus Three: Hal Spacejock 7-9, plus a bonus novella

I Am Number Four: The Lost Files: Return to Paradise

Hal Spacejock Omnibus Two: Contains Hal Spacejock books 4-6 plus Framed

Transmission (The Invasion Chronicles—Book One): A Science Fiction Thriller

Peace Force: Book 1 in the Harriet Walsh series

Sierra Bravo: Book 3 in the Harriet Walsh series

The Burning Shadow: An Origin Novel

Cold Comfort

A Pair of Nuts on the Throne

The Brightest Night: An Origin Novel

A Portion of Dragon and Chips

The Darkest Star: An Origin Novel

The Secret Signal: Book 1 in the Hal Junior series

I Am Number Four: The Lost Files: Five's Legacy

A Butt of Heads