Idaho halted the execution of serial killer Thomas Eugene Creech on Wednesday after medical team members repeatedly failed to find a vein where they could establish an intravenous line to carry out the lethal injection. Creech, 73, has been in prison half a century, convicted of five murders in three states and suspected of several more. Creech, one of the longest-serving death row inmates in the U.S., was wheeled into the execution chamber at the Idaho Maximum Security Institution on a gurney a