&lt;p&gt;&lt;strong&gt;Reel review&lt;/strong&gt;: As no-budget British B-movies go, you could do a lot worse than this tense thriller, says &lt;strong&gt;Xan Brooks&lt;/strong&gt;&lt;/p&gt;&lt;div class=&quot;author&quot;&gt;&lt;a href=&quot;http://www.guardian.co.uk/profile/xanbrooks&quot;&gt;Xan Brooks&lt;/a&gt;&lt;/div&gt;&lt;div class=&quot;author&quot;&gt;&lt;a href=&quot;http://www.guardian.co.uk/profile/henrybarnes&quot;&gt;Henry Barnes&lt;/a&gt;&lt;/div&gt;&lt;br/&gt;&lt;p style=&quot;clear:both&quot; /&gt;