Now as soon as it was day, there was no small stir among the soldiers, what was become of Peter. (19) And when Herod had sought for him, and found him not, he examined the keepers, and commanded that they should be put to death. And he went down from Judea to Caesarea, and there abode. (20) And Herod was highly displeased with them of Tyre and Sidon: but they came with one accord to him, and, having made Blastus the king's chamberlain their friend, desired peace; because their country was nourished by the king's country.
It is a question, more of curiosity than usefulness, where Peter went after he left the house of Mary, and where he secreted himself. It is enough for the Church to discover the Lord's gracious hand in delivering him at that time from Herod, and the expectation of the Jews. The Lord had other work for his servant to accomplish. But when that was over, Peter, like other men, proved to be vulnerable, 2 Peter 1:4.