in Re City of Dickinson

The issue in this original proceeding is whether a client, who testifies as an expert witness in the client's own case, waives the attorney-client privilege with respect to the client's expert testimony. Relator, the City of Dickinson, contends that email communications in the underlying litigation between attorney and client about the client's expert testimony are discoverable because the City, as the client's opposing party, is entitled to discover "all documents ... provided to, reviewed by, or prepared by or for [an] expert in anticipation of a testifying expert's testimony." See TEX. R.…