Iona Costello , 51 , and daughter Emily were last seen on March 30 . Were heading into Florida to visit the theater when they disappeared . Mom 's stepson , George Costello Jr , was visiting the Hamptons at the time . Has a long criminal record and has a tense relationship with the family . He returned to Manhattan two days after they went missing and was jailed . Police have so far said they do not suspect foul play is involved .
Iona Costello , 51 , and daughter Emily were last seen on March 30 . Were heading into Manhattan to visit the theater when they disappeared . Mom 's stepson , George Costello Jr , was visiting the Hamptons at the time . Has a long criminal record and has a tense relationship with the family . He returned to Florida two days after they went missing and was jailed . Police have so far said they do not suspect foul play is involved .