Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| # | Episode | Directed by | Written by | U.S. Viewers (in millions) | Original airdate |
| --- | --- | --- | --- | --- | --- |
| 1.0 | "Insight" | John Patterson | Cynthia Saunders | 13.53 | September21,1996 |
| 2.0 | "Ring Of Fire" | Peter O'Fallon | Nancy Miller | 10.54 | September28,1996 |
| 3.0 | "Unholy Alliance" | P.J. Pesce | Ken Solarz | 9.70 | October19,1996 |
| 4.0 | "I'll Be Watching You" | John Harrison | Lawrence Hertzog | 9.81 | October26,1996 |
| 5.0 | "Unsoiled Sovereignty" | Sarah Pia Anderson | Phyllis Murphy & Jean Gennis | 8.31 | November2,1996 |
| 6.0 | "Modus Operandi" | Andy Wolk | Bob Lowry | 11.08 | November9,1996 |
| 7.0 | "Night Dreams" | Ian Toynton | Cynthia Saunders | 10.51 | November16,1996 |
| 8.0 | "Cruel and Unusual" | Ian Sander | Sibyl Sander | 10.13 | December14,1996 |
| 9.0 | "The Sorcerer's Apprentice" | Lewis Teague | Ken Solarz | 9.40 | January4,1997 |
| 10.0 | "Shattered Silence" | Sarah Pia Anderson | George Geiger | 9.50 | January11,1997 |
| 11.0 | "Doppelganger" | John Patterson | Bob Lowry | 10.12 | January18,1997 |
| 12.0 | "Learning From the Masters" | Kevin Hooks | Jean Gennis & Phyllis Murphy | 7.89 | February1,1997 |
| 13.0 | "The House that Jack Built" | Carl Schenkel | Lawrence Hertzog | 8.28 | February8,1997 |
| 14.0 | "Shadow Of Angels (Part 1)" | John Patterson | Sibyl Gardner | 9.34 | February15,1997 |
| 15.0 | "Shadow Of Angels (Part 2)" | Kevin Hooks | Charles D. Holland | 9.56 | February15,1997 |
| 16.0 | "Film At Eleven" | Jack Bender | Steve Feke | 9.05 | March8,1997 |
| 17.0 | "Crisis" | Matt Penn | Bob Lowry | 8.68 | March22,1997 |
| 18.0 | "Blue Highway" | Michael Pattinson | Phyllis Murphy & Jean Gennis | 10.30 | April5,1997 |
| 19.0 | "FTX: Field Training Exercise" | Michael Lange | George Geiger & Charles D. Holland | 7.52 | April12,1997 |
| 20.0 | "Into the Abyss" | Dan Lerner | David A. Simons | 8.56 | April26,1997 |
| 21.0 | "Venom (Part 1)" | James Whitmore Jr. | Steve Feke | 8.70 | May10,1997 |
Question:
Who wrote the episode with 9.81 million US viewers?
Answer:
Lawrence Hertzog