“No! No! They didn’t know. I ... I ... changed ... the sheet from Ward B ... the day I turned it in ... so as to cover....”

“When did you turn it in?”

“The day of the first traceable murder.”

“Take your telephone, Miss Kerr, and ask the white nurse from Ward B if the pharmacy called her to check her figures.”

“She’s off duty now.”

“Get her in her room!”

The old nurse hesitated and cringed.

Higgins’ voice cut her into action.

“If you want to save your own neck ... take it!”

When Miss Kerr hung the receiver back upon the hook she whispered: