Marilyn Hartman alleged efforts to repeatedly sneak onto flights earned her the nickname "serial stowaway."

Marilyn Hartman alleged efforts to repeatedly sneak onto flights earned her the nickname "serial stowaway."

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'Serial stowaway' Marilyn Hartman will have to wear an ankle monitor as she awaits trial

Marilyn Hartman, the 66-year-old Illinois woman who has been nicknamed a "serial stowaway" because of her alleged attempts to sneak onto commercial airline flights, is mentally fit to stand trial, a judge in Chicago ruled Wednesday.