midnight
`` I 'm with the torpedo flotilla at present , '' said Armitage . `` By the way , Miss Wellington , that reminds me of my request for liberty to-night . The boats are going out and -- and -- it 's rather important I go with them . I shall be back before midnight . '' `` Oh ! '' Sara 's exclamation was so sharp and eager that both Jack and Anne started . `` I have it ! ''