An indestructible alien had found its way aboard the hospital ship. Their orders were simple: destroy it. But how do you destroy an indestructible being? And even if you can figure out how, should you?
Edgar Pangborn, Alan E. Nourse, Ray Bradbury, Murray Leinster, Lester del Rey, Fritz Leiber, Keith Laumer, Warren Lapine, Daniel F. Galouye, Jim Harmon, Patrick Fahy, Marshall King, Frank M. Robinson, L. J. Stecher, Jr., James Stamers, Evelyn E. Smith, J. F. Bone, Isaac Asimov, Jack Sharkey, F. L. Wallace, Frederik Pohl, William Morrison, Katherine MacLean, Milton Lesser, Charles Vincent De Vet & H. L. Gold
Kurt Vonnegut, Jr., R. A. Lafferty, Horace B. Fyfe, Lester del Rey, Frank M. Robinson, James Mckimmey, Jr., Milton Lesser, Keith Laumer, Warren Lapine, Mark Clifton, Mari Wolf, Charles L. Fontenay, Kenneth O'Hara, Charles V. De Vet, Don Thompson, Lynn Venable, Winston Marks, Arnold Castle, Tom Godwin, Sam Merwin Jr., Kris Neville, Ed M. Clinton, Jr., M. C. Pease, Jim Harmon, Robert J. Shea, Frank W. Coggins, Albert Teichner, William Campbell Gault, Charles E. Fritch, E. E. Doc Smith, E. Everett Evans, Albert Hernhunter, Gene Hunter, Arthur G. Hill, Richard O. Lewis, John Sentry & Tom Leahy
Philip K. Dick, C. L. Moore, Isaac Asimov, Bryce Walton, Poul Anderson, William Morrison, Robert Sheckley, Randall Garrett, Lester del Rey, Jerry Sohl, Alan E. Nourse, Mike Lewis, C. M. Kornbluth, Frank M. Robinson, H. B. Fyfe, George O Smith, Damon Knight, Henry Kuttner, H. Beam Piper & Warren Lapine
Harry Harrison, Frank Belknap Long, Philip José Farmer, Alan E. Nourse, Poul Anderson, H. Beam Piper, Philip K. Dick, Warren Lapine, Richard R. Smith, Evelyn E. Smith, Judith Merril, John Foster West, Lyn Venable, Walt Sheldon, C. L. Moore, Robert J. Shea, V. E. Thiessen, Basil Wells, Henry Slesar, Charles E. Fritch, William Campbell Gault, George Edrich, Roger Dee, David C. Knight, Sam Merwin Jr., Frederic Max, M. C. Pease, William F. Nolan, Irving E. Cox, Jr. & Robert Moore Williams
H. B. Fyfe, Milton Lesser, Arthur Dekker Savage, August Derleth, Alan E. Nourse, James Blish, James Mckimmey, Jr., Warren Lapine, Keith Laumer, Mari Wolf, Boyd Ellanby, Alvin Heiner, Don Berry, Mack Reynolds, Kenneth O'Hara, Dave Dryfoos, Jim Harmon, Mark Clifton, R. A. Lafferty, Russ Winterbotham, Richard Wilson, Alex Apostolides, Alfred Coppel, Frank M. Robinson, Ralph Sholto, Russell Burton, Robert Moore Williams, Charles Fontenay, Winston Marks, Jerome Bixby, Andersen Horne, L. Major Reynolds & J. F. Bone
Harry Harrison, Marion Zimmer Bradley, Carl Jacobi, H. Beam Piper, Alan E. Nourse, Andre Norton, Henry Kuttner, Poul Anderson, Frank Belknap Long, Evelyn E. Smith, Warren Lapine, John Victor Peterson, Irving E. Cox, Jr., Richard R. Smith, Jacques Jean Ferrat, George H. Smith, Forrest J Ackerman, Walt Sheldon, Robert F. Young, Robert J. Shea, Richard E. Lowe, M. A. Cummings, William Logan, Eando Binder, Charles E. Fritch, William Gerken, David C. Knight & Robert Abernathy
Alan E. Nourse, Philip José Farmer, Frank Belknap Long, Robert E. Howard, Evelyn E. Smith, Carl Jacobi, Marion Zimmer Bradley, Warren Lapine, Theodore Pratt, Joe Archibald, Roger Arcot, Walter M. Miller Jr, Michael Shaara, Thomas J. O'Hara, Alex James, Robert J. Shea, William F. Nolan, V. R. Francis, Edward S. Staub, John Victor Peterson, Mack Reynolds, Fredric Brown, Allan Howard, Dean Evans, Mann Rubin, Albert Hernhuter, Sam Merwin Jr., Arthur G. Stangland, Joe L. Hensley, J. Anthony Ferlaine, Dorothy De Courcy, John De Courcy, Basil Wells & Nelson Bond
