What then?
Alexander Jardine, sailing from Scotland, came to Lisbon a month after Ian Rullock.

He knew the name of the ship that had carried the fugitive, and fortune had it that she was yet in this port, waiting for her return lading.

He found the captain, learned that Ian had transhipped north to Vigo.

He followed.

At Vigo he picked up a further trace and began again to follow.