Three young children spot a strange, beautiful bird flying over the canal.
The children visit a junk shop and look at a chest of drawers.
The children discover that there's a thief at work.
The children are hot on the trail of a stranger who wants to steal the peregrine falcon.
The telegram may reveal the identity of the thief, but the secret code must be cracked.
The children decode the telegram, and discover that Mr Trim is working with the thieves.
The children escape from the clutches of Mr Trim and make a disturbing discovery.
The peregrine falcon is in danger and so is Jackie. Can the children save them both?
Mr Trim spills the beans and the children have a midnight rendezvous in the zoo.
Will the children outwit the crooks? Will the peregrine falcon survive?