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:
| Title | Season | Director | Teleplay | First Broadcast |
| --- | --- | --- | --- | --- |
| The Golden Spiders | 1.1 | Michael O'Herlihy | Wallace Ware + Peter Nasco | January 16, 1981 |
| Death on the Doorstep | 1.2 | George McCowan | Stephen Downing | January 23, 1981 |
| Before I Die | 1.3 | Edward M. Abroms | Alfred Hayes | January 30, 1981 |
| Wolfe at the Door | 1.4 | Herbert Hirschman | Lee Sheldon | February 6, 1981 |
| Might as Well Be Dead | 1.5 | George McCowan | Seeleg Lester | February 13, 1981 |
| To Catch a Dead Man | 1.6 | Edward M. Abroms | John Meredyth Lucas | February 20, 1981 |
| In the Best Families | 1.7 | George McCowan | Alfred Hayes | March 6, 1981 |
| Murder by the Book | 1.8 | Bob Kelljan | Wallace Ware | March 13, 1981 |
| What Happened to April | 1.9 | Edward M. Abroms | Stephen Downing | March 20, 1981 |
| Gambit | 1.1 | George McCowan | Stephen Kandel | April 3, 1981 |
| Death and the Dolls | 1.11 | Gerald Mayer | Gerald Sanford | April 10, 1981 |
| The Murder in Question | 1.12 | George McCowan | Merwin Gerard | April 17, 1981 |
| The Blue Ribbon Hostage | 1.13 | Ron Satlof | Dick Nelson | May 5, 1981 |
| Sweet Revenge | 1.14 | George McCowan | Ben Roberts | June 2, 1981 |
Question:
What is Teleplay, when First Broadcast is April 10, 1981?
Answer:
Gerald Sanford