Saw this on TV last night, basically this woman (Marie Noe) killed 8 of her 10 children by smothering them. From what I gathered she would have one baby, kill it... have another, kill it, etc... until she couldn't have kids anymore (none of the 10 children reached the age of two and 2 of them died of natural causes). She finally fessed up to the crimes 30 years later and since she was so old at that point they put her on house arrest/probation and studied her to see what made her do what she did.
Anyway, to read more about it
GO HERE.
but wait,
there's more!!!!