05 - Terror Out of Space by Leigh Douglass Brackett

In the aftermath of a startling surge in meteor activity, a wave of inexplicable madness engulfs the already bizarre and poorly understood world of Venus. As Lundy and his team from Tri-World Police, Special Branch, race to uncover the source of this disturbance, they soon realize that identifying the problem is far easier than transporting it back to headquarters. Out of his depth and quickly sinking into the abyss of a Venusian sea, Lundy is about to tap into profound reserves of strength as he confronts the haunting beauty and terror of the Unknown. - Summary by EVKesserich