Diane Haithman contributes to Deadline’s TCA coverage.

PBS started off its TCA executive session with CEO Paula Kerger this morning with word that The Bletchley Circle will return for a second season. The four-part drama series will air Sundays beginning in the Spring. PBS also announced that Coming Back With Wes Moore, a three-part special that “personalizes the experiences of returning veterans”, will premiere in May 14. It will be hosted by combat veteran and author Moore. And History series How We Got To Now With Steven Johnson, which explores the “legacy of great ideas”, premieres in Fall 2014. Nutopia is producing the series hosted by science author and media theorist Johnson.  DEVELOPING.