Okla. Stat. tit. 12, § 12-1185: Liability of garnishee

From the time of the service of the summons upon the garnishee

he shall stand liable to the plaintiff to the amount of the

property, monies, credits and effects in his possession or under his

control, belonging to the defendant or in which he shall be

interested, to the extent of his right or interest therein, and of

all debts due or to become due to the defendant, except such as may

be by law exempt from execution. Any property, monies, credits and

effects held by a conveyance or title void as to the creditors of

the defendant, shall be embraced in such liability. In case such

monies, credits and effects in the possession or under the control

of the garnishee shall exceed the amount of the plaintiff's claim,

the garnishee shall stand liable to the plaintiff only for the

amount of the plaintiff's claim as disclosed by the garnishment

affidavit, together with such further amount as shall be equal to

all costs and damages, which the plaintiff may recover in the action

and garnishment proceedings.