A fall from a semaphore weakens Wood's mind and when he later disappears circumstances point to suicide. His ghostly appearances make the post known as the "Haunted Station," and Helen is appointed as a last resort after many others have quit.
#1The Flying Freight's Captive
#2The Stolen Engine#3The Black Diamond Express#4The Girl at the Throttle#5The Escape on the Limited#6The Plot at the Railroad Cut
#7Helen's Sacrifice
#8The Girl Engineer#9A Boy at the Throttle#10The Girl and the Special#11The Girl Telegrapher's Peril#12The Girl at Lone Point#13A Race for a Crossing#14A Deed of Daring#15The Open Drawbridge#16Train Order Number Forty-Five
#17A Railroader's Bravery#18The Limited's Peril#19The Night Operator at Buxton#20The Fast Mail's Danger
#21Nerves of Steel#22The Death Train#23A Wild Ride#24The Red Signal#25The Railroad Raiders of '62
#26The Leap from the Water Tower#27The Hazards of Helen: Episode13, The Escape on the Fast Freight
#28The Wrong Train Order#29The Tramp Telegrapher#30The Broken Rail
#31The Pay Train#32A Girl's Grit#33Danger Ahead!#34Crossed Wires#35The Human Chain#36The Hazards of Helen Ep26: The Wild Engine
#37In Danger's Path#38The Midnight Limited#39The Substitute Fireman#40The Box Car Trap#41A Perilous Chance#42The Runaway Boxcar#43The Girl on the Bridge#44The Dynamite Train#45The Little Engineer#46The Fate of Number One#47The Rescue of the Brakeman's Children#48The Watertank Plot#49The Girl on the Trestle#50The Fiend at the Throttle#51The Broken Circuit#52A Test of Courage#53A Mile a Minute#54A Matter of Seconds#55The Broken Train#56Near Eternity#57The Girl on the Engine#58A Life in the Balance#59The Engineer's Peril
#60The Race for a SidingYou’re hereThe Haunted Station#62The Girl Who Dared#63When Seconds Count#64To Save the Special
#65One Chance in a Hundred#66Ablaze on the Rails#67The Lost Messenger#68The Record Run#69The Girl Telegrapher's Nerve#70The Open Track#71A Race with Death#72The Runaway Sleeper#73At Danger's Call#74The Broken Brake#75The Engineer's Honor#76At the Risk of Her Life#77The Vanishing Box Car#78Defying Death#79The Forgotten Train Order#80The Gate of Death#81The Secret of the Box Car
#82A Plunge from the Sky#83The Hoodoo of Division B#84The Treasure Train#85The Bridge of Danger#86The Trail of Danger#87To Save the Road#88A Race for a Life#89The Detective's Peril#90With the Aid of the Wrecker#91The Perilous Swing#92Tapped Wires#93The Capture of Red Stanley#94Hurled Through the Drawbridge#95A Race Through the Air
#96In Death's Pathway#97A Daring Chance#98The Broken Wire#99The Lone Point Mystery#100The Human Telegram#101The Spiked Switch#102The Lineman's Peril#103The Peril of the Rails#104The Blocked Track#105The Mysterious Cipher#106The Switchman's Story#107A Mystery of the Rails#108The Trial Run#109The Death Swing#110The Trapping of 'Peeler' White#111The Governor's Special
#112The Midnight Express#113The Wrecked Station
#114The Hazards of Helen#115The Death Siding#116The Fireman's Nemesis#117The Sidetracked Sleeper#118The Prima Donna's Special#119The Mogul Mountain Mystery#120The Railroad Claim Intrigue