S4 E1 • Soldiers at Rest

A head-on train collision kills four railroad workers and 17 soldiers.

S4 E2 • Typhoon Freda

S4 E3 • Full Stop

S4 E4 • New London School Fire

A gas explosion destroys a school and kills 455 people.

S4 E5 • Out of the Blue

A fire traps people inside Montreal's Blue Bird Café and the Wagon Wheel; Flight 261 struck the runway ending in an explosion.

S4 E6 • Blink of an Eye

A storm claims the lives of 35 men and boys, devastating a small fishing village.

S4 E7 • The Blons Avalanche

As survivors try to dig out victims of an avalanche, a second avalanche hits them.

S4 E8 • The Knickerbocker Theater Collapse

During a concert at the Knickerbocker Theatre a wall cracks open, and the roof collapses killing 95 people.

S4 E9 • The CF100 Convent Crash

A jet fighter crashes into a convent in 1956.

S4 E10 • The Eastman Bus Tragedy

A bus carrying volunteers and the handicap plunges into an icy lake.

S4 E11 • Head On

In Pictou County, Nova Scotia the dangers of mining are real and present, never so clearly than on May 9, 1992. Despite the latest safety devices, methane gas released by mining coal was somehow ignited, and 26 miners died.

S4 E12 • The Dryden Air Crash

The snow is falling on March 10, 1989 and the temperature is dropping. A Fokker F28 with 69 passengers aboard attempts to lift off from Dryden Ontario. Speeding down the runway, ice forms on it's wings. and the aircraft fails to lift, crashing at the end of the runway. 24 passengers die in the jet fuel accelerated inferno.

S4 E13 • Islands Under Attack

In 1965 Mt. Taal in the Philippines erupted killing 350 people; in 1929 a submarine earthquake triggered a tsunami.

S4 E14 • Collision Course

Examines the Truxtun and Pollux and the PWA 737 Cranbrook crash.

S4 E15 • Death From Above

Allegheny Airlines flight 736 takes off from Erie, Pennsylvania at 7:45 PM on December 24, 1968. On approach into Bradford, light snow obscures the runway lights and the pilots make a critical error by descending too quickly. The Corvair CV-580 slams into a hillside and kills 20 passengers. Sweeping changes to navigation in poor weather follow the avoidable crash.

S4 E16 • Frozen Hell

In 1941, a blizzard swept through Canada and the United States, taking the lives of eight Canadians and at least 70 Americans.

S4 E17 • Coast to Coast

North America's most destructive hurricane to date.

S4 E18 • Safe Passage

Director Varrick Frissel dies on March 15, 1931, aboard The Viking while shooting action sequences for a new film.

S4 E19 • North Sea Flood

A huge tidal wave hits England and the Netherlands in February 1953 and claims 2000 lives.

S4 E20 • Queen Mary/Curacoa Crash

The Queen Mary plows through the Curacoa's stern, cutting the smaller ship in half.

S4 E21 • Malpasset Dam Failure

On December 2nd 1959 the Malpasset Dam burst with explosive force and a wall of water swept through the Reyran Valley killing 421 people.

S4 E22 • Oppau Factory Explosion

Workers at the BASF nitrate plant in Oppau, Germany prepare to break up gigantic blocks of chemical fertilizer with dynamite.

S4 E23 • Up in Flames

High winds blowing through the forests of Northern Ontario turned a small fire into an inferno.

S4 E24 • All Fall Down

The Malpasset Dam bursts, killing 421 people; the new Second Narrows Bridge collapses into the water.

S4 E25 • Industrial Nightmares

Explosion at a nitrate plant in Germany; weather front traps a layer of air under fog in Belgium.

S4 E26 • Loki's Revenge

Dry temperatures and strong winds cause a destructive wall of fire that destroys townships and kills 71 people.

S4 E27 • Hinton Train Crash

Examines the 1986 crash of two trains east of Hinton, Alberta.

S4 E28 • St. Joseph Bus Crash

A bus in rural Quebec plunged off an embankment killing 43 of it's 48 passengers.