Olivia found out about Fabian's acquaintance with Yale a while ago.

When the culprit behind Mason's assassination was yet to be known, there was a default risk regardless. Fabian's stance didn't matter.

Fortunately, Fabian had feelings for Marina.

After this surgery, not only could Marina kiss the wheelchair goodbye, but Marina and Fabian would also be bound to each other forever.

When Fabian later wished to set up the Heath family, Olivia had the leverage over him to bargain.

Marina coul