Pollock's youth had been troubled by bouts of heavy drinking. In late 1950, after four years of productive sobriety, he once again hit the bottle, and for the remaining six years of his life alcohol played an increasingly disruptive role. His last monumental canvas, Blue Poles, painted in 1952, marks a partial return to the interlaced colors of his earlier drip paintings, but with a row of thick blue lines superimposed, tilting back and forth as they traverse the canvas. Four years later he died in a car accident while driving drunk, killing one of his companions and seriously injuring another.