Dr. Drew Pinsky. Wikimedia, CC. GlaxoSmithKline paid $3 billion to end an investigation by the Department of Justice into its illegal marketing of the antidepressants Paxil and Wellbutrin, and the diabetes drug Avandia. The payment—the largest ever in drug marketing—is accompanied by criminal convictions for the company.

The deal also reveals the DOJ's evidence against the company, collected over more than a decade, dating back to the late 1990s.

Among that evidence:

GSK promoted Paxil for children when in fact it can cause suicidal behavior in kids.

GSK promoted Wellbutrin as a sex drug and TV's Dr. Drew Pinsky was on the company's payroll.

And GSK gave lavish vacations and "speaking fees" to doctors who agreed to promote the drugs to their colleagues.

Here's the story of how GSK promoted these drugs, told through documents filed in court by the DOJ.