Among the findings in this package are: In February, Morgenson warned that the arcane contracts known as credit-default swaps were so volatile and explosive that they would "set off a chain reaction of losses at financial institutions." In May, she examined the moves by private investment firms to buy up hundreds of New York apartment buildings, betting that they could evict tenants and raise rents. In July, she reported on the enormous increase in consumer debt and the changes in the lending system that encouraged risky loans. In September, she dissected the small London Investment unit that had bedazzled the insurance giant AIG with its profits but soon brought it to its knees and helped trigger a widespread collapse. In November, she profiled the reckless executives who gambled on subprime home mortgages and led Merrill Lynch to its demise. In December, she held the credit-rating agencies to sharp account, in particular Moody's, showing how they had minimized or overlooked the dangers to investors.