Although frequency analysis is a powerful and general technique against many ciphers, encryption has still been often effective in practice; many a would-be cryptanalyst was unaware of the technique. Breaking a message without using frequency analysis essentially required knowledge of the cipher used and perhaps of the key involved, thus making espionage, bribery, burglary, defection, etc. more attractive approaches to the cryptanalyticly uninformed. It was finally explicitly recognized

Abigail Folger, Sharon's friend was twenty-five years old when she died. As heiress to the Folger coffee fortune, she had led a very comfortable life. She made her debut in San Francisco in 1961. She graduated from Radcliffe. Like many wealthy girls, she looked for something meaningful to do with her time and became very involved in social work.

Victims Folger and Frykowski

In 1968, she met her lover Voytek Frykowski who introduced her to Sharon and Roman Polanski. She became an investor