Here is a long 17th century book title that summarized the entire story (the archaic spelling has been preserved):
BOOK TITLE: The cruel French lady: or, A true and perfect relation of the most execrable murthers committed by a French lady upon the persons of her own father, two brothers and sister: with a particular account how she contracted for 12000 crowns with a French apothecary to extract poysons for her; which he (taught by the Devil) had found out an art to do beyond all humane imagination, so that they would kill, either to a minute, an hour, a day, a week, a month, or a year. With the manner how they put them in use, by writing of letters, and otherwise; to the destruction of several of the said ladies principal relations, and others, to the number of 50. and upwards, most persons of quality. Together with an account how their devilish practice came to be discovered by the apothecaries breaking one of his own vials of poyson, which poysoned himself; and how the lacquay, who used to be the hellish conveyer of the said poysons, was broke alive on the wheel; but the lady is yet escaped. Faithfully rendred from a relation sent from Paris; London : Printed for Roger Vaughan, 1673.