The major players who have pleaded guilty

Richard Causey, left, former Enron chief accounting officer

Originally indicted in January 2004, Causey was part of a unified defense team with Skilling and Lay for nearly two years until he decided to plead guilty to securities fraud. He's expected to be a key government witness against his former co-defendants. Sentencing: April 21.

Andrew Fastow, left, former finance chief

Indicted in October 2002 on what eventually grew to 98 counts of fraud, conspiracy, insider trading, money laundering and others. Pleaded guilty to two counts of conspiracy, admitting to orchestrating myriad schemes to hide Enron debt and inflate profit while enriching himself with millions. Surrendered nearly $30 million in cash and property. Agreed to serve up to 10 years in prison once prosecutors no longer need his cooperation. Expected to be a key government witness against Lay and Skilling. Sentencing: June 13.

Lea Fastow, left, former assistant treasurer and wife of former finance chief Andrew Fastow, who quit Enron in 1997

Pleaded guilty first to a felony tax crime, admitting to helping hide ill-gotten gains from her husband's schemes from the government. Withdrew plea, then pleaded guilty in May to a newly filed misdemeanor tax crime. Released in July from yearlong prison sentence.

13 others also

have pleaded guilty