My Dearest Love — Emilie Loring

When lovely, twenty three year old Beth Gilbert was suddenly orphaned by the mysterious death of her scientist father, she became the ward of handsome young Chris Bradford. The Bradford family were leaders of metropolitan society, a rich, powerful clan.
Hardly had Beth taken her place in New York's busy social world then Chris told her that someone was trying to steal the million dollar formula her father had given him. And then Beth discovered that more than Gilbert formula was a stake. A human life was involved!