GROSSET & DUNLAP PUBLISHERSNEW YORK, N. Y.COPYRIGHT, 1950, BYGROSSET & DUNLAP, INC.ContentsCHAPTER PAGEI [Night Assignment][1]II [Cap'n Mike][11]III [The Redheaded Kelsos][22]IV [A Warning][33]V [The Mysterious Phone Call][43]VI [The] [Albatross][53]VII [Search for a Clue][63]VIII [The Old Tower][70]IX [Night Watch][82]X [Captured][93]XI [The Hearing][100]XII [The Missing Fisherman][107]XIII [The Tracker][118]XIV [Captain Killian][125]XV [Plimsoll Marks][137]XVI [Night Flight][151]XVII [Enter the Police][162]XVIII [Brendan's Marsh][172]XIX [The Fight at Creek House][188]XX [Read All About It!][201]