. >> drexel burnham? >> i don't know. >> until a few years ago, a little known firm. specializing in junk bonds, high interest and high risk. >> drexel and the head of his department made a deal with ivan boesky to make millions illegally. for example, california company came to him and said they were getting a takeover. he whispered that to boesky bought the scott, shared the prove its with milken's firm. he betrayed his client, secretly earned 6.5 million more at the client's expense. >> authorities worry further disclosures from that affair may weaken public confidence in financial markets and weaken the markets themselves. >> came from inside, looks like a mad house. >> the bull market is over. >> bloodbath. >> calling it the monday massacre, worst drop in wall street history. >> i call it the nearest meltdown. >> by closing bell, the dow-jones average was down more than 500 points. >> this is a crash that people hadn't seen since the great depression. no one had seen the stock market fall that quickly, that fast. >> paper losses, more than $500 billion, october 19