Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Cathy O'Donnell
Table title:
Films
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Year </th><th colspan=1 rowspan=1 > Film </th><th colspan=1 rowspan=1 > Director </th><th colspan=1 rowspan=1 > Role </th><th colspan=1 rowspan=1 > Notes </th></tr>
<tr> <td colspan=1 rowspan=1 > 1945 </td><td colspan=1 rowspan=1 > Wonder Man </td><td colspan=1 rowspan=1 > H. Bruce Humberstone </td><td colspan=1 rowspan=1 > Nightclub Extra </td><td colspan=1 rowspan=1 > Uncredited </td></tr>
<tr> <td colspan=1 rowspan=1 > 1946 </td><td colspan=1 rowspan=1 > The Best Years of Our Lives </td><td colspan=1 rowspan=1 > William Wyler </td><td colspan=1 rowspan=1 > Wilma Cameron </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1947 </td><td colspan=1 rowspan=1 > Bury Me Dead </td><td colspan=1 rowspan=1 > Bernard Vorhaus </td><td colspan=1 rowspan=1 > Rusty </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1948 </td><td colspan=1 rowspan=1 > The Amazing Mr. X </td><td colspan=1 rowspan=1 > Bernard Vorhaus </td><td colspan=1 rowspan=1 > Janet Burke </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1948 </td><td colspan=1 rowspan=1 > They Live by Night </td><td colspan=1 rowspan=1 > Nicholas Ray </td><td colspan=1 rowspan=1 > Catherine "Keechie" Mobley </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1950 </td><td colspan=1 rowspan=1 > Side Street </td><td colspan=1 rowspan=1 > Anthony Mann </td><td colspan=1 rowspan=1 > Ellen Norson </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1950 </td><td class="highlighted"  colspan=1 rowspan=1 > The Miniver Story </td><td colspan=1 rowspan=1 > H.C. Potter </td><td class="highlighted"  colspan=1 rowspan=1 > Judy Miniver </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1951 </td><td colspan=1 rowspan=1 > Never Trust a Gambler </td><td colspan=1 rowspan=1 > Ralph Murphy </td><td colspan=1 rowspan=1 > Virginia Merrill </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1951 </td><td class="highlighted"  colspan=1 rowspan=1 > Detective Story </td><td colspan=1 rowspan=1 > William Wyler </td><td colspan=1 rowspan=1 > Susan Carmichael </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1952 </td><td colspan=1 rowspan=1 > The Woman's Angle </td><td colspan=1 rowspan=1 > Leslie Arliss </td><td colspan=1 rowspan=1 > Nina Van Rhyne </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1954 </td><td colspan=1 rowspan=1 > Eight O'Clock Walk </td><td colspan=1 rowspan=1 > Lance Comfort </td><td colspan=1 rowspan=1 > Jill Manning </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1954 </td><td colspan=1 rowspan=1 > Loves of Three Queens </td><td colspan=1 rowspan=1 > Edgar G. Ulmer </td><td colspan=1 rowspan=1 > Enone </td><td colspan=1 rowspan=1 > segment "The Face That Launched a Thousand Ships" </td></tr>
<tr> <td colspan=1 rowspan=1 > 1955 </td><td colspan=1 rowspan=1 > Mad at the World </td><td colspan=1 rowspan=1 > Harry Essex </td><td colspan=1 rowspan=1 > Anne Bennett </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1955 </td><td colspan=1 rowspan=1 > The Man from Laramie </td><td colspan=1 rowspan=1 > Anthony Mann </td><td colspan=1 rowspan=1 > Barbara Waggoman </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1957 </td><td colspan=1 rowspan=1 > The Deerslayer </td><td colspan=1 rowspan=1 > Kurt Neumann </td><td colspan=1 rowspan=1 > Judith Hutter </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1957 </td><td colspan=1 rowspan=1 > The Story of Mankind </td><td colspan=1 rowspan=1 > Irwin Allen </td><td colspan=1 rowspan=1 > Early Christian Woman </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1958 </td><td colspan=1 rowspan=1 > My World Dies Screaming </td><td colspan=1 rowspan=1 > Harold Daniels </td><td colspan=1 rowspan=1 > Sheila Wayne Tierney </td><td colspan=1 rowspan=1 > retitled Terror in the Haunted House </td></tr>
<tr> <td colspan=1 rowspan=1 > 1959 </td><td colspan=1 rowspan=1 > Ben-Hur </td><td colspan=1 rowspan=1 > William Wyler </td><td colspan=1 rowspan=1 > Tirzah </td><td colspan=1 rowspan=1 >  </td></tr>
</table>
Question:
What roles did O'Donnell play in 1951?
Answer:
O'Donnell starred as JVirginia Merrill in Never Trust a Gambler (1951) and played a separate role in Detective Story (1951).