Update for Oct. 13
Seattle Police have released more details on the one-vehicle crash on Marginal Way that killed the driver and seriously injured a passenger.

From the SPD Blotter:

On 10/13/13, just shortly after midnight, a vehicle was S/B on W. Marginal Wy in the 4800 block, at (according to a witness) a very high rate of speed.
The driver lost control and struck a tree, causing the vehicle to roll over several times. The driver was pronounced dead at the scene. The passenger was taken to Harborview Medical Center by Seattle Fire Dept in critical condition.

The collision was witnessed by a tow truck driver, who stated the vehicle was going over 100 MPH.

Original Post
The Seattle Fire Department is reporting a car accident around midnight on Oct. 12 left one person dead and sent another to the hospital in serious condition.

The accident occurred at 4845 W. Marginal Way S.W.

Seattle Police are investigating and we'll update when more details are released.