This prince, entertaining, like his father, the design of invading Syria, and expecting to find some advantage from having in his camp the rightful occupant of the Syrian throne, treated the captive Demetrius with even greater kindness than his father had done, not only maintaining him handsomely, but even giving him his sister Ehodogune, in marriage.

Demetrius, however, was not to be reconciled to his captivity by any such blandishments, and employed his thoughts chiefly in devising plans by which he might escape.

By the help of a friend he twice managed to evade the vigilance of his guards, and to make his way from Hyrcania towards the frontiers of his own kingdom; but each time he was pursued and caught without effecting his purpose.

The Parthian monarch was no doubt vexed at his pertinacity, and on the second occasion thought it prudent to feign, if he did not even really feel, offence: he banished his ungrateful brother-in-law from his presence, but otherwise visited his crime with no severer penalty than ridicule.

Choosing to see in his attempts to change the place of his abode no serious design, but only the wayward conduct of a child, he sent him a present of some golden dice, implying thereby that it was only for lack of amusement he had grown discontented with his Hyrcanian residence.
Antiochus Sidetes, the brother of Demetrius, had been generally accepted by the Syrians as their monarch, at the time when the news reached them of that prince's defeat and capture by Mithridates.