In 1849, Tubman escaped to Philadelphia, only to return to Maryland to rescue her family soon after. Slowly, one group at a time, she brought relatives with her out of the state, and eventually guided dozens of other enslaved people to freedom. Traveling by night and in extreme secrecy, Tubman (or "Moses", as she was called) "never lost a passenger". After the Fugitive Slave Act of 1850 was passed, she helped guide fugitives farther north into British North America (Canada), and helped newly freed enslaved people find work. Tubman met John Brown in 1858, and helped him plan and recruit supporters for his 1859 raid on Harpers Ferry.