Five minutes was all that The Shadow required to handle the tumblers, taking his time in the process.

There was always chance of emergency wherein The Shadow might require a meeting with some unexpected person.

Five minutes was all that The Shadow required to complete his preliminary search.

It rendered him useless for the time that The Shadow required.

He was in his car, ready to go or linger, as The Shadow might require.

Unwittingly, they were putting to use the very minutes that The Shadow required to make his return!

Matters would remain static here, during the time that The Shadow required.

The Shadow required suitable guarantees before he allowed crooks leeway.

These were facts that The Shadow might require later.

Nevertheless, this was all that The Shadow required for the present.