1-8
: 1s+2s set & dance 1/2 RH across; 1s+2s set & dance 1/2 LH across
9-16
: 1s lead down middle & back up to 2nd place own side (2s step up 15-16)
17-24
: 2s+1s+3s set, cross RH & face clockwise; all chase clockwise 1/2 round
  back to own side
25-32
: All set, cross LH & face anticlockwise; all chase anticlockwise 1/2
  round.  2 1 3

{{explanation}}
Note:  Optional flourish: during chase, fingers on lips for a librarian 'shush'